Lab3 done i guess...

ComputersShop/ComputersShop.sln

@@ -3,7 +3,19 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.3.32825.248
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShop", "ComputersShop\ComputersShop.csproj", "{43D109AA-CB08-47EB-9A8B-B42F881C08F4}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "СomputersShopDataModels", "СomputersShopDataModels\СomputersShopDataModels.csproj", "{325A0EEC-AE7D-49D4-9441-4B390F3D47AC}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopContracts", "ComputersShopContracts\ComputersShopContracts.csproj", "{36B9AA43-8BA7-49B0-845C-2CAE5715670C}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopBusinessLogic", "ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj", "{CDFC655D-B1F8-4D87-9400-A0847FCAEAC6}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopListImplement", "ComputersShopListImplement\ComputersShopListImplement.csproj", "{35DC2893-12C1-417B-9B92-5A18997B47A6}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopView", "ComputersShopView\ComputersShopView.csproj", "{B0416A4B-CD04-4991-BC00-7FCFC9DEEF73}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopFileImplement", "ComputersShopFileImplement\ComputersShopFileImplement.csproj", "{58BB53D3-F224-451F-B9BD-D1D67ACE7F23}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopDataBaseImplement", "ComputersShopDataBaseImplement\ComputersShopDataBaseImplement.csproj", "{E714779D-9239-4CA8-87FA-DB7FC83E45BF}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -11,10 +23,34 @@ Global
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{43D109AA-CB08-47EB-9A8B-B42F881C08F4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{325A0EEC-AE7D-49D4-9441-4B390F3D47AC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{43D109AA-CB08-47EB-9A8B-B42F881C08F4}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{325A0EEC-AE7D-49D4-9441-4B390F3D47AC}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{43D109AA-CB08-47EB-9A8B-B42F881C08F4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{325A0EEC-AE7D-49D4-9441-4B390F3D47AC}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{43D109AA-CB08-47EB-9A8B-B42F881C08F4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{325A0EEC-AE7D-49D4-9441-4B390F3D47AC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{36B9AA43-8BA7-49B0-845C-2CAE5715670C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{36B9AA43-8BA7-49B0-845C-2CAE5715670C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{36B9AA43-8BA7-49B0-845C-2CAE5715670C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{36B9AA43-8BA7-49B0-845C-2CAE5715670C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CDFC655D-B1F8-4D87-9400-A0847FCAEAC6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CDFC655D-B1F8-4D87-9400-A0847FCAEAC6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CDFC655D-B1F8-4D87-9400-A0847FCAEAC6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CDFC655D-B1F8-4D87-9400-A0847FCAEAC6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{35DC2893-12C1-417B-9B92-5A18997B47A6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{35DC2893-12C1-417B-9B92-5A18997B47A6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{35DC2893-12C1-417B-9B92-5A18997B47A6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{35DC2893-12C1-417B-9B92-5A18997B47A6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B0416A4B-CD04-4991-BC00-7FCFC9DEEF73}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B0416A4B-CD04-4991-BC00-7FCFC9DEEF73}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B0416A4B-CD04-4991-BC00-7FCFC9DEEF73}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B0416A4B-CD04-4991-BC00-7FCFC9DEEF73}.Release|Any CPU.Build.0 = Release|Any CPU
+		{58BB53D3-F224-451F-B9BD-D1D67ACE7F23}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{58BB53D3-F224-451F-B9BD-D1D67ACE7F23}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{58BB53D3-F224-451F-B9BD-D1D67ACE7F23}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{58BB53D3-F224-451F-B9BD-D1D67ACE7F23}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E714779D-9239-4CA8-87FA-DB7FC83E45BF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E714779D-9239-4CA8-87FA-DB7FC83E45BF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E714779D-9239-4CA8-87FA-DB7FC83E45BF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E714779D-9239-4CA8-87FA-DB7FC83E45BF}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

ComputersShop/ComputersShop/ComputersShop.csproj

@@ -1,11 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>WinExe</OutputType>
-    <TargetFramework>net6.0-windows</TargetFramework>
-    <Nullable>enable</Nullable>
-    <UseWindowsForms>true</UseWindowsForms>
-    <ImplicitUsings>enable</ImplicitUsings>
-  </PropertyGroup>
-
-</Project>

ComputersShop/ComputersShop/Form1.Designer.cs

@@ -1,39 +0,0 @@
-namespace ComputersShop
-{
-    partial class Form1
-    {
-        /// <summary>
-        ///  Required designer variable.
-        /// </summary>
-        private System.ComponentModel.IContainer components = null;
-
-        /// <summary>
-        ///  Clean up any resources being used.
-        /// </summary>
-        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
-        protected override void Dispose(bool disposing)
-        {
-            if (disposing && (components != null))
-            {
-                components.Dispose();
-            }
-            base.Dispose(disposing);
-        }
-
-        #region Windows Form Designer generated code
-
-        /// <summary>
-        ///  Required method for Designer support - do not modify
-        ///  the contents of this method with the code editor.
-        /// </summary>
-        private void InitializeComponent()
-        {
-            this.components = new System.ComponentModel.Container();
-            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(800, 450);
-            this.Text = "Form1";
-        }
-
-        #endregion
-    }
-}

ComputersShop/ComputersShop/Form1.cs

@@ -1,10 +0,0 @@
-namespace ComputersShop
-{
-    public partial class Form1 : Form
-    {
-        public Form1()
-        {
-            InitializeComponent();
-        }
-    }
-}

ComputersShop/ComputersShop/Form1.resx

@@ -1,120 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
-  <!-- 
-    Microsoft ResX Schema 
-    
-    Version 2.0
-    
-    The primary goals of this format is to allow a simple XML format 
-    that is mostly human readable. The generation and parsing of the 
-    various data types are done through the TypeConverter classes 
-    associated with the data types.
-    
-    Example:
-    
-    ... ado.net/XML headers & schema ...
-    <resheader name="resmimetype">text/microsoft-resx</resheader>
-    <resheader name="version">2.0</resheader>
-    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
-    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
-    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
-    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
-    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
-        <value>[base64 mime encoded serialized .NET Framework object]</value>
-    </data>
-    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
-        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
-        <comment>This is a comment</comment>
-    </data>
-                
-    There are any number of "resheader" rows that contain simple 
-    name/value pairs.
-    
-    Each data row contains a name, and value. The row also contains a 
-    type or mimetype. Type corresponds to a .NET class that support 
-    text/value conversion through the TypeConverter architecture. 
-    Classes that don't support this are serialized and stored with the 
-    mimetype set.
-    
-    The mimetype is used for serialized objects, and tells the 
-    ResXResourceReader how to depersist the object. This is currently not 
-    extensible. For a given mimetype the value must be set accordingly:
-    
-    Note - application/x-microsoft.net.object.binary.base64 is the format 
-    that the ResXResourceWriter will generate, however the reader can 
-    read any of the formats listed below.
-    
-    mimetype: application/x-microsoft.net.object.binary.base64
-    value   : The object must be serialized with 
-            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
-            : and then encoded with base64 encoding.
-    
-    mimetype: application/x-microsoft.net.object.soap.base64
-    value   : The object must be serialized with 
-            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
-            : and then encoded with base64 encoding.
-
-    mimetype: application/x-microsoft.net.object.bytearray.base64
-    value   : The object must be serialized into a byte array 
-            : using a System.ComponentModel.TypeConverter
-            : and then encoded with base64 encoding.
-    -->
-  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
-    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
-    <xsd:element name="root" msdata:IsDataSet="true">
-      <xsd:complexType>
-        <xsd:choice maxOccurs="unbounded">
-          <xsd:element name="metadata">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" />
-              </xsd:sequence>
-              <xsd:attribute name="name" use="required" type="xsd:string" />
-              <xsd:attribute name="type" type="xsd:string" />
-              <xsd:attribute name="mimetype" type="xsd:string" />
-              <xsd:attribute ref="xml:space" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="assembly">
-            <xsd:complexType>
-              <xsd:attribute name="alias" type="xsd:string" />
-              <xsd:attribute name="name" type="xsd:string" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="data">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
-                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
-              </xsd:sequence>
-              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
-              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
-              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
-              <xsd:attribute ref="xml:space" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="resheader">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
-              </xsd:sequence>
-              <xsd:attribute name="name" type="xsd:string" use="required" />
-            </xsd:complexType>
-          </xsd:element>
-        </xsd:choice>
-      </xsd:complexType>
-    </xsd:element>
-  </xsd:schema>
-  <resheader name="resmimetype">
-    <value>text/microsoft-resx</value>
-  </resheader>
-  <resheader name="version">
-    <value>2.0</value>
-  </resheader>
-  <resheader name="reader">
-    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-  </resheader>
-  <resheader name="writer">
-    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-  </resheader>
-</root>

ComputersShop/ComputersShop/Program.cs

@@ -1,17 +0,0 @@
-namespace ComputersShop
-{
-    internal static class Program
-    {
-        /// <summary>
-        ///  The main entry point for the application.
-        /// </summary>
-        [STAThread]
-        static void Main()
-        {
-            // To customize application configuration such as set high DPI settings or default font,
-            // see https://aka.ms/applicationconfiguration.
-            ApplicationConfiguration.Initialize();
-            Application.Run(new Form1());
-        }
-    }
-}

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/ComponentLogic.cs

@@ -0,0 +1,114 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+    public class ComponentLogic : IComponentLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IComponentStorage _componentStorage;
+
+        public ComponentLogic(ILogger<ComponentLogic> logger, IComponentStorage componentStorage)
+        {
+            _logger = logger;
+            _componentStorage = componentStorage;
+        }
+
+        public List<ComponentViewModel>? ReadList(ComponentSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ComponentName:{ComponentName}.Id:{ Id}", model?.ComponentName, model?.Id);
+            var list = model == null ? _componentStorage.GetFullList() : _componentStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+        public ComponentViewModel? ReadElement(ComponentSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. ComponentName:{ComponentName}.Id:{ Id}", model.ComponentName, model.Id);
+            var element = _componentStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+            return element;
+        }
+        public bool Create(ComponentBindingModel model)
+        {
+            CheckModel(model);
+            if (_componentStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Update(ComponentBindingModel model)
+        {
+            CheckModel(model);
+            if (_componentStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(ComponentBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_componentStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(ComponentBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                throw new ArgumentNullException("Нет названия компонента", nameof(model.ComponentName));
+            }
+            if (model.Cost <= 0)
+            {
+                throw new ArgumentNullException("Цена компонента должна быть больше 0", nameof(model.Cost));
+            }
+            _logger.LogInformation("Component. ComponentName:{ComponentName}.Cost:{ Cost}. Id: { Id}", model.ComponentName, model.Cost, model.Id);
+            var element = _componentStorage.GetElement(new ComponentSearchModel
+            {
+                ComponentName = model.ComponentName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Компонент с таким названием уже есть");
+            }
+        }
+    }
+}

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/ComputerLogic.cs

@@ -0,0 +1,119 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+    public class ComputerLogic : IComputerLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IComputerStorage _computerStorage;
+
+        public ComputerLogic(ILogger<ComputerLogic> logger, IComputerStorage computerStorage)
+        {
+            _logger = logger;
+            _computerStorage = computerStorage;
+        }
+
+        public List<ComputerViewModel>? ReadList(ComputerSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ComputerName:{ComputerName}.Id:{ Id}", model?.ComputerName, model?.Id);
+            var list = model == null ? _computerStorage.GetFullList() : _computerStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        public ComputerViewModel? ReadElement(ComputerSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. ComputerName:{ComputerName}.Id:{ Id}", model.ComputerName, model.Id);
+            var element = _computerStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+            return element;
+        }
+
+        public bool Create(ComputerBindingModel model)
+        {
+            CheckModel(model);
+            if (_computerStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(ComputerBindingModel model)
+        {
+            CheckModel(model);
+            if (_computerStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ComputerBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_computerStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ComputerBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ComputerName))
+            {
+                throw new ArgumentNullException("Нет названия компьютера", nameof(model.ComputerName));
+            }
+            if (model.Price <= 0)
+            {
+                throw new ArgumentNullException("Цена компьютера должна быть больше 0", nameof(model.Price));
+            }
+            _logger.LogInformation("Computer. ComputerName:{ComputerName}.Cost:{ Cost}. Id: { Id}", model.ComputerName, model.Price, model.Id);
+            var element = _computerStorage.GetElement(new ComputerSearchModel
+            {
+                ComputerName = model.ComputerName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Компьютер с таким названием уже есть");
+            }
+        }
+    }
+}

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -0,0 +1,124 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+    public class OrderLogic : IOrderLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IOrderStorage _orderStorage;
+        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
+        {
+            _logger = logger;
+            _orderStorage = orderStorage;
+        }
+        public bool CreateOrder(OrderBindingModel model)
+        {
+            CheckModel(model);
+            if (model.Status != OrderStatus.Неизвестен)
+            {
+                _logger.LogWarning("Insert operation failed. Order status incorrect.");
+                return false;
+            }
+            model.Status = OrderStatus.Принят;
+            if (_orderStorage.Insert(model) == null)
+            {
+                model.Status = OrderStatus.Неизвестен;
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool StatusUpdate(OrderBindingModel model, OrderStatus newStatus)
+        {
+            var viewModel = _orderStorage.GetElement(new OrderSearchModel { Id = model.Id });
+            if (viewModel == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (viewModel.Status + 1 != newStatus)
+            {
+                _logger.LogWarning("Update operation failed. Order status incorrect.");
+                return false;
+            }
+            model.Status = newStatus;
+            if (model.Status == OrderStatus.Готов) model.DateImplement = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+            else
+            {
+                model.DateImplement = viewModel.DateImplement;
+            }
+            CheckModel(model, false);
+            if (_orderStorage.Update(model) == null)
+            {
+                model.Status--;
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool DeliveryOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, OrderStatus.Выдан);
+        }
+
+        public bool FinishOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, OrderStatus.Готов);
+        }
+        public bool TakeOrderInWork(OrderBindingModel model)
+        {
+            return StatusUpdate(model, OrderStatus.Выполняется);
+        }
+        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. OrderId:{Id}", model?.Id);
+            var list = model == null ? _orderStorage.GetFullList() :
+                                   _orderStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+        private void CheckModel(OrderBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (model.ComputerId < 0)
+            {
+                throw new ArgumentNullException("Некорректный идентификатор документа",
+                    nameof(model.ComputerId));
+            }
+            if (model.Count <= 0)
+            {
+                throw new ArgumentNullException("Количество компьютеров в заказе должно быть больше 0",
+                    nameof(model.Count));
+            }
+            if (model.Sum <= 0)
+            {
+                throw new ArgumentNullException("Сумма заказа должна быть больше 0",
+                    nameof(model.Sum));
+            }
+            _logger.LogInformation("Computer. OrderID:{Id}. Sum:{Sum}. ComputerID:{ComputerID}.}",
+                model.Id, model.Sum, model.ComputerId);
+        }
+    }
+}

ComputersShop/ComputersShopBusinessLogic/ComputersShopBusinessLogic.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopContracts/BindingModels/ComponentBindingModel.cs

@@ -0,0 +1,17 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+	public class ComponentBindingModel : IComponentModel
+	{
+		public int Id { get; set; }
+		public string ComponentName { get; set; } = string.Empty;
+		public double Cost { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/BindingModels/ComputerBindingModel.cs

@@ -0,0 +1,20 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+    public class ComputerBindingModel : IComputerModel
+    {
+        public int Id { get; set; }
+
+        public string ComputerName { get; set; } = string.Empty;
+
+        public double Price { get; set; }
+
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents { get; set; } = new();
+    }
+}

ComputersShop/ComputersShopContracts/BindingModels/OrderBindingModel.cs

@@ -0,0 +1,21 @@
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+    public class OrderBindingModel : IOrderModel
+    {
+        public int Id { get; set; }
+        public int ComputerId { get; set; }
+        public int Count { get; set; }
+        public double Sum { get; set; }
+        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+        public DateTime DateCreate { get; set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+        public DateTime? DateImplement { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IComponentLogic.cs

@@ -0,0 +1,20 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+    public interface IComponentLogic
+    {
+        List<ComponentViewModel>? ReadList(ComponentSearchModel? model);
+        ComponentViewModel? ReadElement(ComponentSearchModel model);
+        bool Create(ComponentBindingModel model);
+        bool Update(ComponentBindingModel model);
+        bool Delete(ComponentBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IComputerLogic.cs

@@ -0,0 +1,20 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+    public interface IComputerLogic
+    {
+        List<ComputerViewModel>? ReadList(ComputerSearchModel? model);
+        ComputerViewModel? ReadElement(ComputerSearchModel model);
+        bool Create(ComputerBindingModel model);
+        bool Update(ComputerBindingModel model);
+        bool Delete(ComputerBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IOrderLogic.cs

@@ -0,0 +1,20 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+    public interface IOrderLogic
+    {
+        List<OrderViewModel>? ReadList(OrderSearchModel? model);
+        bool CreateOrder(OrderBindingModel model);
+        bool TakeOrderInWork(OrderBindingModel model);
+        bool FinishOrder(OrderBindingModel model);
+        bool DeliveryOrder(OrderBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/ComputersShopContracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\СomputersShopDataModels\СomputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopContracts/SearchModels/ComponentSearchModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.SearchModels
+{
+    public class ComponentSearchModel
+    {
+        public int? Id { get; set; }
+        public string? ComponentName { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/SearchModels/ComputerSearchModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.SearchModels
+{
+    public class ComputerSearchModel
+    {
+        public int? Id { get; set; }
+        public string? ComputerName { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/SearchModels/OrderSearchModel.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.SearchModels
+{
+    public class OrderSearchModel
+    {
+        public int? Id { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/StorageContracts/IComponentStorage.cs

@@ -0,0 +1,21 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.StoragesContracts
+{
+    public interface IComponentStorage
+    {
+        List<ComponentViewModel> GetFullList();
+        List<ComponentViewModel> GetFilteredList(ComponentSearchModel model);
+        ComponentViewModel? GetElement(ComponentSearchModel model);
+        ComponentViewModel? Insert(ComponentBindingModel model);
+        ComponentViewModel? Update(ComponentBindingModel model);
+        ComponentViewModel? Delete(ComponentBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/StorageContracts/IComputerStorage.cs

@@ -0,0 +1,21 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.StoragesContracts
+{
+    public interface IComputerStorage
+    {
+        List<ComputerViewModel> GetFullList();
+        List<ComputerViewModel> GetFilteredList(ComputerSearchModel model);
+        ComputerViewModel? GetElement(ComputerSearchModel model);
+        ComputerViewModel? Insert(ComputerBindingModel model);
+        ComputerViewModel? Update(ComputerBindingModel model);
+        ComputerViewModel? Delete(ComputerBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/StorageContracts/IOrderStorage.cs

@@ -0,0 +1,21 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.StoragesContracts
+{
+    public interface IOrderStorage
+    {
+        List<OrderViewModel> GetFullList();
+        List<OrderViewModel> GetFilteredList(OrderSearchModel model);
+        OrderViewModel? GetElement(OrderSearchModel model);
+        OrderViewModel? Insert(OrderBindingModel model);
+        OrderViewModel? Update(OrderBindingModel model);
+        OrderViewModel? Delete(OrderBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/ViewModels/ComponentViewModel.cs

@@ -0,0 +1,19 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+    public class ComponentViewModel : IComponentModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Название компонента")]
+        public string ComponentName { get; set; } = string.Empty;
+        [DisplayName("Цена")]
+        public double Cost { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/ViewModels/ComputerViewModel.cs

@@ -0,0 +1,27 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+    public class ComputerViewModel : IComputerModel
+    {
+        public int Id { get; set; }
+
+        [DisplayName("Название компьютера")]
+        public string ComputerName { get; set; } = string.Empty;
+
+        [DisplayName("Цена")]
+        public double Price { get; set; }
+
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get;
+            set;
+        } = new();
+    }
+}

ComputersShop/ComputersShopContracts/ViewModels/OrderViewModel.cs

@@ -0,0 +1,30 @@
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+    public class OrderViewModel : IOrderModel
+    {
+        [DisplayName("Номер")]
+        public int Id { get; set; }
+        public int ComputerId { get; set; }
+        [DisplayName("Компьютер")]
+        public string ComputerName { get; set; } = string.Empty;
+        [DisplayName("Количество")]
+        public int Count { get; set; }
+        [DisplayName("Сумма")]
+        public double Sum { get; set; }
+        [DisplayName("Статус")]
+        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+        [DisplayName("Дата создания")]
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+        [DisplayName("Дата выполнения")]
+        public DateTime? DateImplement { get; set; }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/ComputersShopDataBase.cs

@@ -0,0 +1,27 @@
+using Microsoft.EntityFrameworkCore;
+using ComputersShopDataBaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement
+{
+    public class ComputersShopDataBase : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (optionsBuilder.IsConfigured == false)
+            {
+                optionsBuilder.UseNpgsql(@"Host=localhost;Port=5432;Database=ComputersShopDatabaseFull;Username=postgres;Password=hellothere132");
+            }
+            base.OnConfiguring(optionsBuilder);
+        }
+        public virtual DbSet<Component> Components { set; get; }
+        public virtual DbSet<Computer> Computers { set; get; }
+        public virtual DbSet<ComputerComponent> ComputerComponents { set; get; }
+        public virtual DbSet<Order> Orders { set; get; }
+    }
+}
+

ComputersShop/ComputersShopDataBaseImplement/ComputersShopDataBaseImplement.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.3" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="7.0.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\СomputersShopDataModels\СomputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopDataBaseImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,89 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataBaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        public List<ComponentViewModel> GetFullList()
+        {
+            using var context = new ComputersShopDataBase();
+            return context.Components
+            .Select(x => x.GetViewModel)
+           .ToList();
+        }
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return new();
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Components
+            .Where(x => x.ComponentName.Contains(model.ComponentName))
+           .Select(x => x.GetViewModel)
+           .ToList();
+        }
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Components
+            .FirstOrDefault(x =>
+           (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName ==
+           model.ComponentName) ||
+            (model.Id.HasValue && x.Id == model.Id))
+            ?.GetViewModel;
+        }
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            var newComponent = Component.Create(model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            using var context = new ComputersShopDataBase();
+            context.Components.Add(newComponent);
+            context.SaveChanges();
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var Component = context.Components.FirstOrDefault(x => x.Id ==
+           model.Id);
+            if (Component == null)
+            {
+                return null;
+            }
+            Component.Update(model);
+            context.SaveChanges();
+            return Component.GetViewModel;
+        }
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var element = context.Components.FirstOrDefault(rec => rec.Id ==
+           model.Id);
+            if (element != null)
+            {
+                context.Components.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Implements/ComputerStorage.cs

@@ -0,0 +1,110 @@
+using Microsoft.EntityFrameworkCore;
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataBaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Implements
+{
+    public class ComputerStorage : IComputerStorage
+    {
+        public List<ComputerViewModel> GetFullList()
+        {
+            using var context = new ComputersShopDataBase();
+            return context.Computers.Include(x => x.Components)
+            .ThenInclude(x => x.Component)
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+        public List<ComputerViewModel> GetFilteredList(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName))
+            {
+                return new();
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Computers
+             .Include(x => x.Components)
+            .ThenInclude(x => x.Component)
+            .Where(x => x.ComputerName.Contains(model.ComputerName))
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+        public ComputerViewModel? GetElement(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName) &&
+            !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Computers
+             .Include(x => x.Components)
+             .ThenInclude(x => x.Component)
+             .FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComputerName) &&
+            x.ComputerName == model.ComputerName) ||
+            (model.Id.HasValue && x.Id ==
+            model.Id))
+            ?.GetViewModel;
+        }
+        public ComputerViewModel? Insert(ComputerBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var newProduct = Computer.Create(context, model);
+            if (newProduct == null)
+            {
+                return null;
+            }
+            context.Computers.Add(newProduct);
+            context.SaveChanges();
+            return newProduct.GetViewModel;
+        }
+        public ComputerViewModel? Update(ComputerBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var product = context.Computers.FirstOrDefault(rec =>
+                rec.Id == model.Id);
+                if (product == null)
+                {
+                    return null;
+                }
+                product.Update(model);
+                context.SaveChanges();
+                product.UpdateComponents(context, model);
+                transaction.Commit();
+                return product.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+        public ComputerViewModel? Delete(ComputerBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var element = context.Computers
+            .Include(x => x.Components)
+            .FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Computers.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Implements/OrderStorage.cs

@@ -0,0 +1,106 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+
+            var element = context.Orders.FirstOrDefault(rec => rec.Id == model.Id);
+
+            if (element != null)
+            {
+                context.Orders.Remove(element);
+                context.SaveChanges();
+
+                return GetViewModel(element);
+            }
+
+            return null;
+        }
+
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+
+            using var context = new ComputersShopDataBase();
+
+            return GetViewModel(context.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id)));
+        }
+
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return new();
+            }
+
+            using var context = new ComputersShopDataBase();
+
+            return context.Orders.Where(x => x.Id == model.Id).Select(x => GetViewModel(x)).ToList();
+        }
+
+        public List<OrderViewModel> GetFullList()
+        {
+            using var context = new ComputersShopDataBase();
+
+            return context.Orders.Select(x => GetViewModel(x)).ToList();
+        }
+
+        public OrderViewModel? Insert(OrderBindingModel model)
+        {
+            var newOrder = Order.Create(model);
+            if (newOrder == null)
+            {
+                return null;
+            }
+
+            using var context = new ComputersShopDataBase();
+
+            context.Orders.Add(newOrder);
+            context.SaveChanges();
+            return GetViewModel(newOrder);
+        }
+
+        public OrderViewModel? Update(OrderBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+
+            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
+
+            if (order == null)
+            {
+                return null;
+            }
+
+            order.Update(model);
+            context.SaveChanges();
+
+            return GetViewModel(order);
+        }
+
+        private static OrderViewModel GetViewModel(Order order)
+        {
+            var viewModel = order.GetViewModel;
+            using var context = new ComputersShopDataBase();
+            var element = context.Computers.FirstOrDefault(x => x.Id == order.ComputerId);
+            viewModel.ComputerName = element.ComputerName;
+            return viewModel;
+        }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Migrations/20240304180911_InitialCreate.Designer.cs

@@ -0,0 +1,169 @@
+// <auto-generated />
+using System;
+using ComputersShopDataBaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ComputersShopDataBaseImplement.Migrations
+{
+    [DbContext(typeof(ComputersShopDataBase))]
+    [Migration("20240304180911_InitialCreate")]
+    partial class InitialCreate
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Computer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComputerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Computers");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ComputerComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("ComputerId");
+
+                    b.ToTable("ComputerComponents");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateImplement")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComputerId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ComputerComponent", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Component", "Component")
+                        .WithMany("ComputerComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", "Computer")
+                        .WithMany("Components")
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Computer");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", null)
+                        .WithMany("Orders")
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("ComputerComponents");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Computer", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Orders");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Migrations/20240304180911_InitialCreate.cs

@@ -0,0 +1,126 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ComputersShopDataBaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitialCreate : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Components",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComponentName = table.Column<string>(type: "text", nullable: false),
+                    Cost = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Components", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Computers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComputerName = table.Column<string>(type: "text", nullable: false),
+                    Price = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Computers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ComputerComponents",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComputerId = table.Column<int>(type: "integer", nullable: false),
+                    ComponentId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ComputerComponents", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ComputerComponents_Components_ComponentId",
+                        column: x => x.ComponentId,
+                        principalTable: "Components",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ComputerComponents_Computers_ComputerId",
+                        column: x => x.ComputerId,
+                        principalTable: "Computers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Orders",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComputerId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false),
+                    Sum = table.Column<double>(type: "double precision", nullable: false),
+                    Status = table.Column<int>(type: "integer", nullable: false),
+                    DateCreate = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateImplement = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Orders", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Orders_Computers_ComputerId",
+                        column: x => x.ComputerId,
+                        principalTable: "Computers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ComputerComponents_ComponentId",
+                table: "ComputerComponents",
+                column: "ComponentId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ComputerComponents_ComputerId",
+                table: "ComputerComponents",
+                column: "ComputerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Orders_ComputerId",
+                table: "Orders",
+                column: "ComputerId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ComputerComponents");
+
+            migrationBuilder.DropTable(
+                name: "Orders");
+
+            migrationBuilder.DropTable(
+                name: "Components");
+
+            migrationBuilder.DropTable(
+                name: "Computers");
+        }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Migrations/ComputersShopDataBaseModelSnapshot.cs

@@ -0,0 +1,166 @@
+// <auto-generated />
+using System;
+using ComputersShopDataBaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ComputersShopDataBaseImplement.Migrations
+{
+    [DbContext(typeof(ComputersShopDataBase))]
+    partial class ComputersShopDataBaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Computer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComputerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Computers");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ComputerComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("ComputerId");
+
+                    b.ToTable("ComputerComponents");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateImplement")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComputerId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ComputerComponent", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Component", "Component")
+                        .WithMany("ComputerComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", "Computer")
+                        .WithMany("Components")
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Computer");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", null)
+                        .WithMany("Orders")
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("ComputerComponents");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Computer", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Orders");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Models/Component.cs

@@ -0,0 +1,64 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public string ComponentName { get; private set; } = string.Empty;
+        [Required]
+        public double Cost { get; set; }
+        [ForeignKey("ComponentId")]
+        public virtual List<ComputerComponent> ComputerComponents { get; set; } = new();
+        public static Component? Create(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public static Component Create(ComponentViewModel model)
+        {
+            return new Component
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public void Update(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComponentName = model.ComponentName;
+            Cost = model.Cost;
+        }
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComponentName = ComponentName,
+            Cost = Cost
+        };
+    }
+
+}
+

ComputersShop/ComputersShopDataBaseImplement/Models/Computer.cs

@@ -0,0 +1,98 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+    public class Computer : IComputerModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string ComputerName { get; set; } = string.Empty;
+        [Required]
+        public double Price { get; set; }
+        private Dictionary<int, (IComponentModel, int)>? _ComputerComponents = null;
+        [NotMapped]
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get
+            {
+                if (_ComputerComponents == null)
+                {
+                    _ComputerComponents = Components.ToDictionary(recPC => recPC.ComponentId, recPC =>
+                   (recPC.Component as IComponentModel, recPC.Count));
+                }
+                return _ComputerComponents;
+            }
+        }
+        [ForeignKey("ComputerId")]
+        public virtual List<ComputerComponent> Components { get; set; } = new();
+        [ForeignKey("ComputerId")]
+        public virtual List<Order> Orders { get; set; } = new();
+        public static Computer Create(ComputersShopDataBase context, ComputerBindingModel model)
+        {
+            return new Computer()
+            {
+                Id = model.Id,
+                ComputerName = model.ComputerName,
+                Price = model.Price,
+                Components = model.ComputerComponents.Select(x => new ComputerComponent
+                {
+                    Component = context.Components.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList()
+            };
+        }
+        public void Update(ComputerBindingModel model)
+        {
+            ComputerName = model.ComputerName;
+            Price = model.Price;
+        }
+        public ComputerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerName = ComputerName,
+            Price = Price,
+            ComputerComponents = ComputerComponents
+        };
+        public void UpdateComponents(ComputersShopDataBase context,
+        ComputerBindingModel model)
+        {
+            var ComputerComponents = context.ComputerComponents.Where(rec =>
+           rec.ComputerId == model.Id).ToList();
+            if (ComputerComponents != null && ComputerComponents.Count > 0)
+            { // удалили те, которых нет в модели
+                context.ComputerComponents.RemoveRange(ComputerComponents.Where(rec
+               => !model.ComputerComponents.ContainsKey(rec.ComponentId)));
+                context.SaveChanges();
+                // обновили количество у существующих записей
+                foreach (var updateComponent in ComputerComponents)
+                {
+                    updateComponent.Count = model.ComputerComponents[updateComponent.ComponentId].Item2;
+                    model.ComputerComponents.Remove(updateComponent.ComponentId);
+                }
+                context.SaveChanges();
+            }
+            var Computer = context.Computers.First(x => x.Id == Id);
+            foreach (var pc in model.ComputerComponents)
+            {
+                context.ComputerComponents.Add(new ComputerComponent
+                {
+                    Computer = Computer,
+                    Component = context.Components.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _ComputerComponents = null;
+        }
+    }
+}
+

ComputersShop/ComputersShopDataBaseImplement/Models/ComputerComponent.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+    public class ComputerComponent
+    {
+        public int Id { get; set; }
+        [Required]
+        public int ComputerId { get; set; }
+        [Required]
+        public int ComponentId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        public virtual Component Component { get; set; } = new();
+        public virtual Computer Computer { get; set; } = new();
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Models/Order.cs

@@ -0,0 +1,70 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        [Required]
+        public int ComputerId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        [Required]
+        public double Sum { get; set; }
+        [Required]
+        public OrderStatus Status { get; set; }
+        [Required]
+        public DateTime DateCreate { get; set; }
+
+        public DateTime? DateImplement { get; set; }
+
+        public int Id { get; set; }
+
+        public static Order? Create(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                ComputerId = model.ComputerId,
+                Count = model.Count,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement
+            };
+        }
+
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            DateImplement = model.DateImplement;
+        }
+
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerId = ComputerId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement
+        };
+    }
+}

ComputersShop/ComputersShopFileImplement/ComputersShopFileImplement.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\СomputersShopDataModels\СomputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopFileImplement/DataFileSingleton.cs

@@ -0,0 +1,54 @@
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement
+{
+    public class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+        private readonly string ComponentFileName = "Component.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string ComputerFileName = "Computer.xml";
+        public List<Component> Components { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Computer> Computers { get; private set; }
+        public static DataFileSingleton GetInstance()
+        {
+            if (instance == null)
+            {
+                instance = new DataFileSingleton();
+            }
+            return instance;
+        }
+        public void SaveComponents() => SaveData(Components, ComponentFileName, "Components", x => x.GetXElement);
+        public void SaveComputers() => SaveData(Computers, ComputerFileName, "Computers", x => x.GetXElement);
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+            Computers = LoadData(ComputerFileName, "Computer", x => Computer.Create(x)!)!;
+            Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
+        }
+        private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
+        {
+            if (File.Exists(filename))
+            {
+                return
+               XDocument.Load(filename)?.Root?.Elements(xmlNodeName)?.Select(selectFunction)?.ToList();
+            }
+            return new List<T>();
+        }
+        private static void SaveData<T>(List<T> data, string filename, string xmlNodeName, Func<T, XElement> selectFunction)
+        {
+            if (data != null)
+            {
+                new XDocument(new XElement(xmlNodeName, data.Select(selectFunction).ToArray())).Save(filename);
+            }
+        }
+    }
+}

ComputersShop/ComputersShopFileImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,78 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        private readonly DataFileSingleton source;
+        public ComponentStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<ComponentViewModel> GetFullList()
+        {
+            return source.Components.Select(x => x.GetViewModel).ToList();
+        }
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return new();
+            }
+            return source.Components.Where(x => x.ComponentName.Contains(model.ComponentName)).Select(x => x.GetViewModel).ToList();
+        }
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Components.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName) ||
+            (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            model.Id = source.Components.Count > 0 ? source.Components.Max(x => x.Id) + 1 : 1;
+            var newComponent = Component.Create(model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            source.Components.Add(newComponent);
+            source.SaveComponents();
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            var component = source.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            source.SaveComponents();
+            return component.GetViewModel;
+        }
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            var element = source.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.Components.Remove(element);
+                source.SaveComponents();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+    }
+}

ComputersShop/ComputersShopFileImplement/Implements/ComputerStorage.cs

@@ -0,0 +1,82 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class ComputerStorage : IComputerStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public ComputerStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public ComputerViewModel? GetElement(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Computers.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComputerName) && x.ComputerName == model.ComputerName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public List<ComputerViewModel> GetFilteredList(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName))
+            {
+                return new();
+            }
+            return source.Computers.Where(x => x.ComputerName.Contains(model.ComputerName)).Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<ComputerViewModel> GetFullList()
+        {
+            return source.Computers.Select(x => x.GetViewModel).ToList();
+        }
+
+        public ComputerViewModel? Insert(ComputerBindingModel model)
+        {
+            model.Id = source.Computers.Count > 0 ? source.Computers.Max(x => x.Id) + 1 : 1;
+            var newDoc = Computer.Create(model);
+            if (newDoc == null)
+            {
+                return null;
+            }
+            source.Computers.Add(newDoc);
+            source.SaveComputers();
+            return newDoc.GetViewModel;
+        }
+
+        public ComputerViewModel? Update(ComputerBindingModel model)
+        {
+            var document = source.Computers.FirstOrDefault(x => x.Id == model.Id);
+            if (document == null)
+            {
+                return null;
+            }
+            document.Update(model);
+            source.SaveComputers();
+            return document.GetViewModel;
+        }
+        public ComputerViewModel? Delete(ComputerBindingModel model)
+        {
+            var document = source.Computers.FirstOrDefault(x => x.Id == model.Id);
+            if (document == null)
+            {
+                return null;
+            }
+            document.Update(model);
+            source.SaveComputers();
+            return document.GetViewModel;
+        }
+    }
+}

ComputersShop/ComputersShopFileImplement/Implements/OrderStorage.cs

@@ -0,0 +1,96 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public OrderStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            return GetViewModel(source.Orders.FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id));
+        }
+
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return new();
+            }
+            return source.Orders.Where(x => x.Id == model.Id).Select(x => GetViewModel(x)).ToList();
+        }
+
+        public List<OrderViewModel> GetFullList()
+        {
+            return source.Orders.Select(x => GetViewModel(x)).ToList();
+        }
+
+        public OrderViewModel? Insert(OrderBindingModel model)
+        {
+            model.Id = source.Orders.Count > 0 ? source.Orders.Max(x => x.Id) + 1 : 1;
+            var newOrder = Order.Create(model);
+            if (newOrder == null)
+            {
+                return null;
+            }
+            source.Orders.Add(newOrder);
+            source.SaveOrders();
+            return GetViewModel(newOrder);
+        }
+
+        public OrderViewModel? Update(OrderBindingModel model)
+        {
+            var order = source.Orders.FirstOrDefault(x => x.Id == model.Id);
+            if (order == null)
+            {
+                return null;
+            }
+            order.Update(model);
+            source.SaveOrders();
+            return GetViewModel(order);
+        }
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            var order = source.Orders.FirstOrDefault(x => x.Id == model.Id);
+            if (order == null)
+            {
+                return null;
+            }
+            order.Update(model);
+            source.SaveOrders();
+            return GetViewModel(order);
+        }
+
+        private OrderViewModel GetViewModel(Order order)
+        {
+            var viewModel = order.GetViewModel;
+            foreach (var comp in source.Computers)
+            {
+                if (comp.Id == order.ComputerId)
+                {
+                    viewModel.ComputerName = comp.ComputerName;
+                    break;
+                }
+            }
+            return viewModel;
+        }
+    }
+}

ComputersShop/ComputersShopFileImplement/Models/Component.cs

@@ -0,0 +1,64 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+        public string ComponentName { get; private set; } = string.Empty;
+        public double Cost { get; set; }
+        public static Component? Create(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public static Component? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComponentName = element.Element("ComponentName")!.Value,
+                Cost = Convert.ToDouble(element.Element("Cost")!.Value)
+            };
+        }
+        public void Update(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComponentName = model.ComponentName;
+            Cost = model.Cost;
+        }
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComponentName = ComponentName,
+            Cost = Cost
+        };
+        public XElement GetXElement => new("Component",
+        new XAttribute("Id", Id),
+        new XElement("ComponentName", ComponentName),
+        new XElement("Cost", Cost.ToString()));
+    }
+}

ComputersShop/ComputersShopFileImplement/Models/Computer.cs

@@ -0,0 +1,95 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Computer : IComputerModel
+    {
+        public int Id { get; private set; }
+        public string ComputerName { get; private set; } = string.Empty;
+        public double Price { get; private set; }
+        public Dictionary<int, int> Components { get; private set; } = new();
+        private Dictionary<int, (IComponentModel, int)>? _ComputerComponents = null;
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get
+            {
+                if (_ComputerComponents == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _ComputerComponents = Components.ToDictionary(x => x.Key, y =>
+                    ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!,
+                    y.Value));
+                }
+                return _ComputerComponents;
+            }
+        }
+        public static Computer? Create(ComputerBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Computer()
+            {
+                Id = model.Id,
+                ComputerName = model.ComputerName,
+                Price = model.Price,
+                Components = model.ComputerComponents.ToDictionary(x => x.Key, x
+               => x.Value.Item2)
+            };
+        }
+        public static Computer? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Computer()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComputerName = element.Element("ComputerName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Components =
+           element.Element("ComputerComponents")!.Elements("ComputerComponent")
+            .ToDictionary(x =>
+           Convert.ToInt32(x.Element("Key")?.Value), x =>
+           Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+        public void Update(ComputerBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComputerName = model.ComputerName;
+            Price = model.Price;
+            Components = model.ComputerComponents.ToDictionary(x => x.Key, x =>
+           x.Value.Item2);
+            _ComputerComponents = null;
+        }
+        public ComputerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerName = ComputerName,
+            Price = Price,
+            ComputerComponents = ComputerComponents
+        };
+        public XElement GetXElement => new("Computer",
+            new XAttribute("Id", Id),
+            new XElement("ComputerName", ComputerName),
+            new XElement("Price", Price.ToString()),
+            new XElement("ComputerComponents", Components.Select(x => new XElement("ComputerComponent", new XElement("Key", x.Key), new XElement("Value", x.Value)))
+
+       .ToArray()));
+
+    }
+}

ComputersShop/ComputersShopFileImplement/Models/Order.cs

@@ -0,0 +1,104 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int ComputerId { get; private set; }
+
+        public int Count { get; private set; }
+
+        public double Sum { get; private set; }
+
+        public OrderStatus Status { get; private set; } = OrderStatus.Неизвестен;
+
+        public DateTime DateCreate { get; private set; } = DateTime.Now;
+
+        public DateTime? DateImplement { get; private set; }
+
+        public int Id { get; private set; }
+
+        public static Order? Create(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                ComputerId = model.ComputerId,
+                Count = model.Count,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement
+            };
+        }
+
+        public static Order? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            var order = new Order()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComputerId = Convert.ToInt32(element.Element("ComputerId")!.Value),
+                Count = Convert.ToInt32(element.Element("Count")!.Value),
+                Sum = Convert.ToDouble(element.Element("Sum")!.Value),
+                DateCreate = DateTime.ParseExact(element.Element("DateCreate")!.Value, "G", null),
+            };
+            DateTime.TryParse(element.Element("DateImplement")!.Value, out DateTime dateImpl);
+
+            order.DateImplement = dateImpl;
+
+            if (!Enum.TryParse(element.Element("Status")!.Value, out OrderStatus status))
+            {
+                return null;
+            }
+            order.Status = status;
+            return order;
+        }
+
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            DateImplement = model.DateImplement;
+        }
+
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerId = ComputerId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement
+        };
+
+        public XElement GetXElement => new("Order",
+          new XAttribute("Id", Id),
+          new XElement("ComputerId", ComputerId),
+          new XElement("Count", Count.ToString()),
+          new XElement("Sum", Sum.ToString()),
+          new XElement("Status", Status.ToString()),
+          new XElement("DateCreate", DateCreate.ToString()),
+          new XElement("DateImplement", DateImplement.ToString()));
+    }
+}

ComputersShop/ComputersShopListImplement/ComputersShopListImplement.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\СomputersShopDataModels\СomputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopListImplement/DataListSingleton.cs

@@ -0,0 +1,32 @@
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement
+{
+    public class DataListSingleton
+    {
+        private static DataListSingleton? _instance;
+        public List<Component> Components { get; set; }
+        public List<Order> Orders { get; set; }
+        public List<Computer> Computers { get; set; }
+        private DataListSingleton()
+        {
+            Components = new List<Component>();
+            Orders = new List<Order>();
+            Computers = new List<Computer>();
+        }
+        public static DataListSingleton GetInstance()
+        {
+            if (_instance == null)
+            {
+                _instance = new DataListSingleton();
+            }
+            return _instance;
+        }
+    }
+}

ComputersShop/ComputersShopListImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,106 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        private readonly DataListSingleton _source;
+        public ComponentStorage()
+        {
+            _source = DataListSingleton.GetInstance();
+        }
+        public List<ComponentViewModel> GetFullList()
+        {
+            var result = new List<ComponentViewModel>();
+            foreach (var component in _source.Components)
+            {
+                result.Add(component.GetViewModel);
+            }
+            return result;
+        }
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            var result = new List<ComponentViewModel>();
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return result;
+            }
+            foreach (var component in _source.Components)
+            {
+                if (component.ComponentName.Contains(model.ComponentName))
+                {
+                    result.Add(component.GetViewModel);
+                }
+            }
+            return result;
+        }
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            foreach (var component in _source.Components)
+            {
+                if ((!string.IsNullOrEmpty(model.ComponentName) && component.ComponentName == model.ComponentName) ||
+                (model.Id.HasValue && component.Id == model.Id))
+                {
+                    return component.GetViewModel;
+                }
+            }
+            return null;
+        }
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            model.Id = 1;
+            foreach (var component in _source.Components)
+            {
+                if (model.Id <= component.Id)
+                {
+                    model.Id = component.Id + 1;
+                }
+            }
+            var newComponent = Component.Create(model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            _source.Components.Add(newComponent);
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            foreach (var component in _source.Components)
+            {
+                if (component.Id == model.Id)
+                {
+                    component.Update(model);
+                    return component.GetViewModel;
+                }
+            }
+            return null;
+        }
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            for (int i = 0; i < _source.Components.Count; ++i)
+            {
+                if (_source.Components[i].Id == model.Id)
+                {
+                    var element = _source.Components[i];
+                    _source.Components.RemoveAt(i);
+                    return element.GetViewModel;
+                }
+            }
+            return null;
+        }
+    }
+}

ComputersShop/ComputersShopListImplement/Implements/ComputerStorage.cs

@@ -0,0 +1,106 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Implements
+{
+    public class ComputerStorage : IComputerStorage
+    {
+        private readonly DataListSingleton _source;
+        public ComputerStorage()
+        {
+            _source = DataListSingleton.GetInstance();
+        }
+        public List<ComputerViewModel> GetFullList()
+        {
+            var result = new List<ComputerViewModel>();
+            foreach (var Computer in _source.Computers)
+            {
+                result.Add(Computer.GetViewModel);
+            }
+            return result;
+        }
+        public List<ComputerViewModel> GetFilteredList(ComputerSearchModel model)
+        {
+            var result = new List<ComputerViewModel>();
+            if (string.IsNullOrEmpty(model.ComputerName))
+            {
+                return result;
+            }
+            foreach (var Computer in _source.Computers)
+            {
+                if (Computer.ComputerName.Contains(model.ComputerName))
+                {
+                    result.Add(Computer.GetViewModel);
+                }
+            }
+            return result;
+        }
+        public ComputerViewModel? GetElement(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            foreach (var Computer in _source.Computers)
+            {
+                if ((!string.IsNullOrEmpty(model.ComputerName) && Computer.ComputerName == model.ComputerName) ||
+                (model.Id.HasValue && Computer.Id == model.Id))
+                {
+                    return Computer.GetViewModel;
+                }
+            }
+            return null;
+        }
+        public ComputerViewModel? Insert(ComputerBindingModel model)
+        {
+            model.Id = 1;
+            foreach (var Computer in _source.Computers)
+            {
+                if (model.Id <= Computer.Id)
+                {
+                    model.Id = Computer.Id + 1;
+                }
+            }
+            var newComputer = Computer.Create(model);
+            if (newComputer == null)
+            {
+                return null;
+            }
+            _source.Computers.Add(newComputer);
+            return newComputer.GetViewModel;
+        }
+        public ComputerViewModel? Update(ComputerBindingModel model)
+        {
+            foreach (var Computer in _source.Computers)
+            {
+                if (Computer.Id == model.Id)
+                {
+                    Computer.Update(model);
+                    return Computer.GetViewModel;
+                }
+            }
+            return null;
+        }
+        public ComputerViewModel? Delete(ComputerBindingModel model)
+        {
+            for (int i = 0; i < _source.Computers.Count; ++i)
+            {
+                if (_source.Computers[i].Id == model.Id)
+                {
+                    var element = _source.Computers[i];
+                    _source.Computers.RemoveAt(i);
+                    return element.GetViewModel;
+                }
+            }
+            return null;
+        }
+    }
+}

ComputersShop/ComputersShopListImplement/Implements/OrderStorage.cs

@@ -0,0 +1,120 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopListImplement;
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrdersShopListImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataListSingleton _source;
+        public OrderStorage()
+        {
+            _source = DataListSingleton.GetInstance();
+        }
+        public List<OrderViewModel> GetFullList()
+        {
+            var result = new List<OrderViewModel>();
+            foreach (var Order in _source.Orders)
+            {
+                result.Add(GetViewModel(Order));
+            }
+            return result;
+        }
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            var result = new List<OrderViewModel>();
+            if (model == null)
+            {
+                return result;
+            }
+            foreach (var Order in _source.Orders)
+            {
+                if (Order.Id == model.Id)
+                {
+                    result.Add(GetViewModel(Order));
+                }
+            }
+            return result;
+        }
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            foreach (var Order in _source.Orders)
+            {
+                if (model.Id.HasValue && Order.Id == model.Id)
+                {
+                    return GetViewModel(Order);
+                }
+            }
+            return null;
+        }
+        public OrderViewModel? Insert(OrderBindingModel model)
+        {
+            model.Id = 1;
+            foreach (var Order in _source.Orders)
+            {
+                if (model.Id <= Order.Id)
+                {
+                    model.Id = Order.Id + 1;
+                }
+            }
+            var newOrder = Order.Create(model);
+            if (newOrder == null)
+            {
+                return null;
+            }
+            _source.Orders.Add(newOrder);
+            return GetViewModel(newOrder);
+        }
+        public OrderViewModel? Update(OrderBindingModel model)
+        {
+            foreach (var Order in _source.Orders)
+            {
+                if (Order.Id == model.Id)
+                {
+                    Order.Update(model);
+                    return GetViewModel(Order);
+                }
+            }
+            return null;
+        }
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            for (int i = 0; i < _source.Orders.Count; ++i)
+            {
+                if (_source.Orders[i].Id == model.Id)
+                {
+                    var element = _source.Orders[i];
+                    _source.Orders.RemoveAt(i);
+                    return GetViewModel(element);
+                }
+            }
+            return null;
+        }
+
+        private OrderViewModel GetViewModel(Order order)
+        {
+            var viewModel = order.GetViewModel;
+            foreach (var comp in _source.Computers)
+            {
+                if (comp.Id == order.ComputerId)
+                {
+                    viewModel.ComputerName = comp.ComputerName;
+                    break;
+                }
+            }
+            return viewModel;
+        }
+    }
+}

ComputersShop/ComputersShopListImplement/Models/Component.cs

@@ -0,0 +1,46 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+        public string ComponentName { get; private set; } = string.Empty;
+        public double Cost { get; set; }
+        public static Component? Create(ComponentBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public void Update(ComponentBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComponentName = model.ComponentName;
+            Cost = model.Cost;
+        }
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComponentName = ComponentName,
+            Cost = Cost
+        };
+    }
+}

ComputersShop/ComputersShopListImplement/Models/Computer.cs

@@ -0,0 +1,54 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Models
+{
+    public class Computer : IComputerModel
+    {
+        public int Id { get; private set; }
+        public string ComputerName { get; private set; } = string.Empty;
+        public double Price { get; private set; }
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get;
+            private set;
+        } = new Dictionary<int, (IComponentModel, int)>();
+        public static Computer? Create(ComputerBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Computer()
+            {
+                Id = model.Id,
+                ComputerName = model.ComputerName,
+                Price = model.Price,
+                ComputerComponents = model.ComputerComponents
+            };
+        }
+        public void Update(ComputerBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComputerName = model.ComputerName;
+            Price = model.Price;
+            ComputerComponents = model.ComputerComponents;
+        }
+        public ComputerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerName = ComputerName,
+            Price = Price,
+            ComputerComponents = ComputerComponents
+        };
+    }
+}

ComputersShop/ComputersShopListImplement/Models/Order.cs

@@ -0,0 +1,69 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+
+        public int ComputerId { get; private set; }
+
+        public int Count { get; private set; }
+
+        public double Sum { get; private set; }
+
+        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+
+        public DateTime? DateImplement { get; set; }
+
+        public static Order? Create(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                ComputerId = model.ComputerId,
+                Count = model.Count,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement
+            };
+        }
+
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            DateImplement = model.DateImplement;
+        }
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerId = ComputerId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement
+        };
+    }
+}

ComputersShop/ComputersShopView/ComputersShopView.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.0" />
+    <PackageReference Include="NLog" Version="5.1.1" />
+    <PackageReference Include="NLog.Extensions.Logging" Version="5.2.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj" />
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\ComputersShopDataBaseImplement\ComputersShopDataBaseImplement.csproj" />
+    <ProjectReference Include="..\ComputersShopFileImplement\ComputersShopFileImplement.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopView/FormComponent.Designer.cs

@@ -0,0 +1,119 @@
+namespace ComputersShopView
+{
+	partial class FormComponent
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+            this.labelName = new System.Windows.Forms.Label();
+            this.textBoxName = new System.Windows.Forms.TextBox();
+            this.textBoxCost = new System.Windows.Forms.TextBox();
+            this.labelCost = new System.Windows.Forms.Label();
+            this.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // labelName
+            // 
+            this.labelName.AutoSize = true;
+            this.labelName.Location = new System.Drawing.Point(12, 9);
+            this.labelName.Name = "labelName";
+            this.labelName.Size = new System.Drawing.Size(62, 15);
+            this.labelName.TabIndex = 0;
+            this.labelName.Text = "Название:";
+            // 
+            // textBoxName
+            // 
+            this.textBoxName.Location = new System.Drawing.Point(80, 6);
+            this.textBoxName.Name = "textBoxName";
+            this.textBoxName.Size = new System.Drawing.Size(287, 23);
+            this.textBoxName.TabIndex = 1;
+            // 
+            // textBoxCost
+            // 
+            this.textBoxCost.Location = new System.Drawing.Point(80, 35);
+            this.textBoxCost.Name = "textBoxCost";
+            this.textBoxCost.Size = new System.Drawing.Size(136, 23);
+            this.textBoxCost.TabIndex = 3;
+            // 
+            // labelCost
+            // 
+            this.labelCost.AutoSize = true;
+            this.labelCost.Location = new System.Drawing.Point(12, 38);
+            this.labelCost.Name = "labelCost";
+            this.labelCost.Size = new System.Drawing.Size(38, 15);
+            this.labelCost.TabIndex = 2;
+            this.labelCost.Text = "Цена:";
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(211, 64);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(75, 23);
+            this.buttonSave.TabIndex = 4;
+            this.buttonSave.Text = "Сохранить";
+            this.buttonSave.UseVisualStyleBackColor = true;
+            this.buttonSave.Click += new System.EventHandler(this.ButtonSave_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.Location = new System.Drawing.Point(292, 64);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(75, 23);
+            this.buttonCancel.TabIndex = 5;
+            this.buttonCancel.Text = "Отмена";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.ButtonCancel_Click);
+            // 
+            // FormComponent
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(375, 96);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Controls.Add(this.textBoxCost);
+            this.Controls.Add(this.labelCost);
+            this.Controls.Add(this.textBoxName);
+            this.Controls.Add(this.labelName);
+            this.Name = "FormComponent";
+            this.Text = "Компонент";
+            this.Load += new System.EventHandler(this.FormComponent_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+		}
+
+		#endregion
+
+		private Label labelName;
+		private TextBox textBoxName;
+		private TextBox textBoxCost;
+		private Label labelCost;
+		private Button buttonSave;
+		private Button buttonCancel;
+	}
+}

ComputersShop/ComputersShopView/FormComponent.cs

@@ -0,0 +1,95 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ComputersShopView
+{
+	public partial class FormComponent : Form
+	{
+		private readonly ILogger _logger;
+		private readonly IComponentLogic _logic;
+		private int? _id;
+		public int Id { set { _id = value; } }
+
+		public FormComponent(ILogger<FormComponent> logger, IComponentLogic logic)
+		{
+			InitializeComponent();
+			_logger = logger;
+			_logic = logic;
+		}
+
+		private void FormComponent_Load(object sender, EventArgs e)
+		{
+			if (_id.HasValue)
+			{
+				try
+				{
+					_logger.LogInformation("Получение компонента");
+					var view = _logic.ReadElement(new ComponentSearchModel
+					{
+						Id = _id.Value
+					});
+					if (view != null)
+					{
+						textBoxName.Text = view.ComponentName;
+						textBoxCost.Text = view.Cost.ToString();
+					}
+				}
+				catch (Exception ex)
+				{
+					_logger.LogError(ex, "Ошибка получения компонента");
+					MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+					MessageBoxIcon.Error);
+				}
+			}
+		}
+
+		private void ButtonSave_Click(object sender, EventArgs e)
+		{
+			if (string.IsNullOrEmpty(textBoxName.Text))
+			{
+				MessageBox.Show("Заполните название", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return;
+			}
+			_logger.LogInformation("Сохранение компонента");
+			try
+			{
+				var model = new ComponentBindingModel
+				{
+					Id = _id ?? 0,
+					ComponentName = textBoxName.Text,
+					Cost = Convert.ToDouble(textBoxCost.Text)
+				};
+				var operationResult = _id.HasValue ? _logic.Update(model) : _logic.Create(model);
+				if (!operationResult)
+				{
+					throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+			    }
+				MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+				DialogResult = DialogResult.OK;
+				Close();
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка сохранения компонента");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
+		}
+
+		private void ButtonCancel_Click(object sender, EventArgs e)
+		{
+			DialogResult = DialogResult.Cancel;
+			Close();
+		}
+	}
+}

ComputersShop/ComputersShopView/FormComponent.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ComputersShop/ComputersShopView/FormComponents.Designer.cs

@@ -0,0 +1,114 @@
+namespace ComputersShopView
+{
+	partial class FormComponents
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			this.dataGridView = new System.Windows.Forms.DataGridView();
+			this.buttonAdd = new System.Windows.Forms.Button();
+			this.buttonUpd = new System.Windows.Forms.Button();
+			this.buttonDel = new System.Windows.Forms.Button();
+			this.buttonRef = new System.Windows.Forms.Button();
+			((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+			this.SuspendLayout();
+			// 
+			// dataGridView
+			// 
+			this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+			this.dataGridView.Location = new System.Drawing.Point(12, 12);
+			this.dataGridView.Name = "dataGridView";
+			this.dataGridView.RowTemplate.Height = 25;
+			this.dataGridView.Size = new System.Drawing.Size(441, 426);
+			this.dataGridView.TabIndex = 0;
+			// 
+			// buttonAdd
+			// 
+			this.buttonAdd.Location = new System.Drawing.Point(459, 12);
+			this.buttonAdd.Name = "buttonAdd";
+			this.buttonAdd.Size = new System.Drawing.Size(147, 23);
+			this.buttonAdd.TabIndex = 1;
+			this.buttonAdd.Text = "Добавить";
+			this.buttonAdd.UseVisualStyleBackColor = true;
+			this.buttonAdd.Click += new System.EventHandler(this.ButtonAdd_Click);
+			// 
+			// buttonUpd
+			// 
+			this.buttonUpd.Location = new System.Drawing.Point(459, 50);
+			this.buttonUpd.Name = "buttonUpd";
+			this.buttonUpd.Size = new System.Drawing.Size(147, 23);
+			this.buttonUpd.TabIndex = 2;
+			this.buttonUpd.Text = "Изменить";
+			this.buttonUpd.UseVisualStyleBackColor = true;
+			this.buttonUpd.Click += new System.EventHandler(this.ButtonUpd_Click);
+			// 
+			// buttonDel
+			// 
+			this.buttonDel.Location = new System.Drawing.Point(459, 91);
+			this.buttonDel.Name = "buttonDel";
+			this.buttonDel.Size = new System.Drawing.Size(147, 23);
+			this.buttonDel.TabIndex = 3;
+			this.buttonDel.Text = "Удалить";
+			this.buttonDel.UseVisualStyleBackColor = true;
+			this.buttonDel.Click += new System.EventHandler(this.ButtonDel_Click);
+			// 
+			// buttonRef
+			// 
+			this.buttonRef.Location = new System.Drawing.Point(459, 134);
+			this.buttonRef.Name = "buttonRef";
+			this.buttonRef.Size = new System.Drawing.Size(147, 23);
+			this.buttonRef.TabIndex = 4;
+			this.buttonRef.Text = "Обновить";
+			this.buttonRef.UseVisualStyleBackColor = true;
+			this.buttonRef.Click += new System.EventHandler(this.ButtonRef_Click);
+			// 
+			// FormComponents
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.ClientSize = new System.Drawing.Size(618, 450);
+			this.Controls.Add(this.buttonRef);
+			this.Controls.Add(this.buttonDel);
+			this.Controls.Add(this.buttonUpd);
+			this.Controls.Add(this.buttonAdd);
+			this.Controls.Add(this.dataGridView);
+			this.Name = "FormComponents";
+			this.Text = "Компоненты";
+			this.Load += new System.EventHandler(this.FormComponents_Load);
+			((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+			this.ResumeLayout(false);
+
+		}
+
+		#endregion
+
+		private DataGridView dataGridView;
+		private Button buttonAdd;
+		private Button buttonUpd;
+		private Button buttonDel;
+		private Button buttonRef;
+	}
+}

ComputersShop/ComputersShopView/FormComponents.cs

@@ -0,0 +1,116 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using Microsoft.Extensions.Logging;
+using Microsoft.VisualBasic.Logging;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ComputersShopView
+{
+	public partial class FormComponents : Form
+	{
+		private readonly ILogger _logger;
+
+		private readonly IComponentLogic _logic;
+
+		public FormComponents(ILogger<FormComponents> logger, IComponentLogic logic)
+		{
+			InitializeComponent();
+			_logger = logger;
+			_logic = logic;
+		}
+
+		private void FormComponents_Load(object sender, EventArgs e)
+		{
+			LoadData();
+		}
+
+		private void LoadData()
+		{
+			try
+			{
+				var list = _logic.ReadList(null);
+				if (list != null)
+				{
+					dataGridView.DataSource = list;
+					dataGridView.Columns["Id"].Visible = false;
+					dataGridView.Columns["ComponentName"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+				}
+				_logger.LogInformation("Загрузка компонентов");
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка загрузки компонентов");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
+		}
+
+		private void ButtonAdd_Click(object sender, EventArgs e)
+		{
+			var service = Program.ServiceProvider?.GetService(typeof(FormComponent));
+			if (service is FormComponent form)
+			{
+				if (form.ShowDialog() == DialogResult.OK)
+				{
+					LoadData();
+				}
+			}
+		}
+
+		private void ButtonUpd_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				var service = Program.ServiceProvider?.GetService(typeof(FormComponent));
+				if (service is FormComponent form)
+				{
+					form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+					if (form.ShowDialog() == DialogResult.OK)
+					{
+						LoadData();
+					}
+				}
+			}
+		}
+
+		private void ButtonDel_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
+				{
+					int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+					_logger.LogInformation("Удаление компонента");
+					try
+					{
+						if (!_logic.Delete(new ComponentBindingModel
+						{
+							Id = id
+						}))
+						{
+							throw new Exception("Ошибка при удалении. Дополнительная информация в логах.");
+					    }
+						LoadData();
+					}
+					catch (Exception ex)
+					{
+						_logger.LogError(ex, "Ошибка удаления компонента");
+						MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+					}
+				}
+			}
+		}
+
+		private void ButtonRef_Click(object sender, EventArgs e)
+		{
+			LoadData();
+		}
+	}
+}

ComputersShop/ComputersShopView/FormComponents.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ComputersShop/ComputersShopView/FormComputer.Designer.cs

@@ -0,0 +1,234 @@
+namespace ComputersShopView
+{
+	partial class FormComputer
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			this.label1 = new System.Windows.Forms.Label();
+			this.textBoxName = new System.Windows.Forms.TextBox();
+			this.textBoxPrice = new System.Windows.Forms.TextBox();
+			this.label2 = new System.Windows.Forms.Label();
+			this.groupBox1 = new System.Windows.Forms.GroupBox();
+			this.buttonRef = new System.Windows.Forms.Button();
+			this.buttonDel = new System.Windows.Forms.Button();
+			this.buttonUpd = new System.Windows.Forms.Button();
+			this.buttonAdd = new System.Windows.Forms.Button();
+			this.dataGridView = new System.Windows.Forms.DataGridView();
+			this.ColumnId = new System.Windows.Forms.DataGridViewTextBoxColumn();
+			this.ComponentColumn = new System.Windows.Forms.DataGridViewTextBoxColumn();
+			this.CountColumn = new System.Windows.Forms.DataGridViewTextBoxColumn();
+			this.buttonSave = new System.Windows.Forms.Button();
+			this.buttonCancel = new System.Windows.Forms.Button();
+			this.groupBox1.SuspendLayout();
+			((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+			this.SuspendLayout();
+			// 
+			// label1
+			// 
+			this.label1.AutoSize = true;
+			this.label1.Location = new System.Drawing.Point(12, 12);
+			this.label1.Name = "label1";
+			this.label1.Size = new System.Drawing.Size(62, 15);
+			this.label1.TabIndex = 0;
+			this.label1.Text = "Название:";
+			// 
+			// textBoxName
+			// 
+			this.textBoxName.Location = new System.Drawing.Point(77, 9);
+			this.textBoxName.Name = "textBoxName";
+			this.textBoxName.Size = new System.Drawing.Size(261, 23);
+			this.textBoxName.TabIndex = 1;
+			// 
+			// textBoxPrice
+			// 
+			this.textBoxPrice.Location = new System.Drawing.Point(88, 38);
+			this.textBoxPrice.Name = "textBoxPrice";
+			this.textBoxPrice.ReadOnly = true;
+			this.textBoxPrice.Size = new System.Drawing.Size(159, 23);
+			this.textBoxPrice.TabIndex = 3;
+			// 
+			// label2
+			// 
+			this.label2.AutoSize = true;
+			this.label2.Location = new System.Drawing.Point(12, 41);
+			this.label2.Name = "label2";
+			this.label2.Size = new System.Drawing.Size(70, 15);
+			this.label2.TabIndex = 2;
+			this.label2.Text = "Стоимость:";
+			// 
+			// groupBox1
+			// 
+			this.groupBox1.Controls.Add(this.buttonRef);
+			this.groupBox1.Controls.Add(this.buttonDel);
+			this.groupBox1.Controls.Add(this.buttonUpd);
+			this.groupBox1.Controls.Add(this.buttonAdd);
+			this.groupBox1.Controls.Add(this.dataGridView);
+			this.groupBox1.Location = new System.Drawing.Point(12, 67);
+			this.groupBox1.Name = "groupBox1";
+			this.groupBox1.Size = new System.Drawing.Size(593, 335);
+			this.groupBox1.TabIndex = 4;
+			this.groupBox1.TabStop = false;
+			this.groupBox1.Text = "Компоненты";
+			// 
+			// buttonRef
+			// 
+			this.buttonRef.Location = new System.Drawing.Point(471, 163);
+			this.buttonRef.Name = "buttonRef";
+			this.buttonRef.Size = new System.Drawing.Size(75, 23);
+			this.buttonRef.TabIndex = 5;
+			this.buttonRef.Text = "Обновить";
+			this.buttonRef.UseVisualStyleBackColor = true;
+			this.buttonRef.Click += new System.EventHandler(this.ButtonRef_Click);
+			// 
+			// buttonDel
+			// 
+			this.buttonDel.Location = new System.Drawing.Point(471, 116);
+			this.buttonDel.Name = "buttonDel";
+			this.buttonDel.Size = new System.Drawing.Size(75, 23);
+			this.buttonDel.TabIndex = 3;
+			this.buttonDel.Text = "Удалить";
+			this.buttonDel.UseVisualStyleBackColor = true;
+			this.buttonDel.Click += new System.EventHandler(this.ButtonDel_Click);
+			// 
+			// buttonUpd
+			// 
+			this.buttonUpd.Location = new System.Drawing.Point(471, 67);
+			this.buttonUpd.Name = "buttonUpd";
+			this.buttonUpd.Size = new System.Drawing.Size(75, 23);
+			this.buttonUpd.TabIndex = 2;
+			this.buttonUpd.Text = "Изменить";
+			this.buttonUpd.UseVisualStyleBackColor = true;
+			this.buttonUpd.Click += new System.EventHandler(this.ButtonUpd_Click);
+			// 
+			// buttonAdd
+			// 
+			this.buttonAdd.Location = new System.Drawing.Point(471, 22);
+			this.buttonAdd.Name = "buttonAdd";
+			this.buttonAdd.Size = new System.Drawing.Size(75, 23);
+			this.buttonAdd.TabIndex = 1;
+			this.buttonAdd.Text = "Добавить";
+			this.buttonAdd.UseVisualStyleBackColor = true;
+			this.buttonAdd.Click += new System.EventHandler(this.ButtonAdd_Click);
+			// 
+			// dataGridView
+			// 
+			this.dataGridView.AllowUserToAddRows = false;
+			this.dataGridView.AllowUserToDeleteRows = false;
+			this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+			this.dataGridView.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
+            this.ColumnId,
+            this.ComponentColumn,
+            this.CountColumn});
+			this.dataGridView.Location = new System.Drawing.Point(6, 22);
+			this.dataGridView.Name = "dataGridView";
+			this.dataGridView.ReadOnly = true;
+			this.dataGridView.RowTemplate.Height = 25;
+			this.dataGridView.Size = new System.Drawing.Size(417, 307);
+			this.dataGridView.TabIndex = 0;
+			// 
+			// ColumnId
+			// 
+			this.ColumnId.HeaderText = "Column1";
+			this.ColumnId.Name = "ColumnId";
+			this.ColumnId.ReadOnly = true;
+			this.ColumnId.Visible = false;
+			// 
+			// ComponentColumn
+			// 
+			this.ComponentColumn.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill;
+			this.ComponentColumn.HeaderText = "Компонент";
+			this.ComponentColumn.Name = "ComponentColumn";
+			this.ComponentColumn.ReadOnly = true;
+			// 
+			// CountColumn
+			// 
+			this.CountColumn.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill;
+			this.CountColumn.HeaderText = "Количество";
+			this.CountColumn.Name = "CountColumn";
+			this.CountColumn.ReadOnly = true;
+			// 
+			// buttonSave
+			// 
+			this.buttonSave.Location = new System.Drawing.Point(449, 408);
+			this.buttonSave.Name = "buttonSave";
+			this.buttonSave.Size = new System.Drawing.Size(75, 23);
+			this.buttonSave.TabIndex = 5;
+			this.buttonSave.Text = "Сохранить";
+			this.buttonSave.UseVisualStyleBackColor = true;
+			this.buttonSave.Click += new System.EventHandler(this.ButtonSave_Click);
+			// 
+			// buttonCancel
+			// 
+			this.buttonCancel.Location = new System.Drawing.Point(530, 408);
+			this.buttonCancel.Name = "buttonCancel";
+			this.buttonCancel.Size = new System.Drawing.Size(75, 23);
+			this.buttonCancel.TabIndex = 6;
+			this.buttonCancel.Text = "Отмена";
+			this.buttonCancel.UseVisualStyleBackColor = true;
+			this.buttonCancel.Click += new System.EventHandler(this.ButtonCancel_Click);
+			// 
+			// FormComputer
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.ClientSize = new System.Drawing.Size(621, 445);
+			this.Controls.Add(this.buttonCancel);
+			this.Controls.Add(this.buttonSave);
+			this.Controls.Add(this.groupBox1);
+			this.Controls.Add(this.textBoxPrice);
+			this.Controls.Add(this.label2);
+			this.Controls.Add(this.textBoxName);
+			this.Controls.Add(this.label1);
+			this.Name = "FormComputer";
+			this.Text = "Компьютер";
+			this.Load += new System.EventHandler(this.FormComputer_Load);
+			this.groupBox1.ResumeLayout(false);
+			((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+			this.ResumeLayout(false);
+			this.PerformLayout();
+
+		}
+
+		#endregion
+
+		private Label label1;
+		private TextBox textBoxName;
+		private TextBox textBoxPrice;
+		private Label label2;
+		private GroupBox groupBox1;
+		private Button buttonRef;
+		private Button buttonDel;
+		private Button buttonUpd;
+		private Button buttonAdd;
+		private DataGridView dataGridView;
+		private Button buttonSave;
+		private Button buttonCancel;
+		private DataGridViewTextBoxColumn ColumnId;
+		private DataGridViewTextBoxColumn ComponentColumn;
+		private DataGridViewTextBoxColumn CountColumn;
+	}
+}

ComputersShop/ComputersShopView/FormComputer.cs

@@ -0,0 +1,218 @@
+using ComputersShopDataModels.Models;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.BindingModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ComputersShopView
+{
+	public partial class FormComputer : Form
+	{
+		private readonly ILogger _logger;
+		private readonly IComputerLogic _logic;
+		private int? _id;
+		private Dictionary<int, (IComponentModel, int)> _computerComponents;
+		public int Id { set { _id = value; } }
+
+		public FormComputer(ILogger<FormComputer> logger, IComputerLogic logic)
+		{
+			InitializeComponent();
+			_logger = logger;
+			_logic = logic;
+			_computerComponents = new Dictionary<int, (IComponentModel, int)>();
+		}
+
+		private void FormComputer_Load(object sender, EventArgs e)
+		{
+			if (_id.HasValue)
+			{
+				_logger.LogInformation("Загрузка компьютера");
+				try
+				{
+					var view = _logic.ReadElement(new ComputerSearchModel
+					{
+						Id = _id.Value
+					});
+					if (view != null)
+					{
+						textBoxName.Text = view.ComputerName;
+						textBoxPrice.Text = view.Price.ToString();
+						_computerComponents = view.ComputerComponents ?? new Dictionary<int, (IComponentModel, int)>();
+						LoadData();
+					}
+				}
+				catch (Exception ex)
+				{
+					_logger.LogError(ex, "Ошибка загрузки компьютера");
+					MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+					MessageBoxIcon.Error);
+				}
+			}
+		}
+		private void LoadData()
+		{
+			_logger.LogInformation("Загрузка компонента компьютера");
+			try
+			{
+				if (_computerComponents != null)
+				{
+					dataGridView.Rows.Clear();
+					foreach (var pc in _computerComponents)
+					{
+						dataGridView.Rows.Add(new object[] { pc.Key, pc.Value.Item1.ComponentName, pc.Value.Item2 });
+					}
+					textBoxPrice.Text = CalcPrice().ToString();
+				}
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка загрузки компонента компьютера");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
+		}
+		private void ButtonAdd_Click(object sender, EventArgs e)
+		{
+			var service = Program.ServiceProvider?.GetService(typeof(FormComputerComponent));
+			if (service is FormComputerComponent form)
+			{
+				if (form.ShowDialog() == DialogResult.OK)
+				{
+					if (form.ComponentModel == null)
+					{
+						return;
+					}
+					_logger.LogInformation("Добавление нового компонента: { ComponentName} - { Count}", form.ComponentModel.ComponentName, form.Count);
+					if (_computerComponents.ContainsKey(form.Id))
+					{
+						_computerComponents[form.Id] = (form.ComponentModel,
+					   form.Count);
+					}
+					else
+					{
+						_computerComponents.Add(form.Id, (form.ComponentModel,
+					   form.Count));
+					}
+					LoadData();
+				}
+			}
+		}
+		private void ButtonUpd_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				var service = Program.ServiceProvider?.GetService(typeof(FormComputerComponent));
+				if (service is FormComputerComponent form)
+				{
+					int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value);
+					form.Id = id;
+					form.Count = _computerComponents[id].Item2;
+					if (form.ShowDialog() == DialogResult.OK)
+					{
+						if (form.ComponentModel == null)
+						{
+							return;
+						}
+						_logger.LogInformation("Изменение компонента: { ComponentName} - { Count}", form.ComponentModel.ComponentName, form.Count);
+						_computerComponents[form.Id] = (form.ComponentModel, form.Count);
+						LoadData();
+					}
+				}
+			}
+		}
+
+		private void ButtonDel_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				if (MessageBox.Show("Удалить запись?", "Вопрос",
+			   MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
+				{
+					try
+					{
+						_logger.LogInformation("Удаление компонента: { ComponentName} - { Count}", dataGridView.SelectedRows[0].Cells[1].Value);
+						_computerComponents?.Remove(Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value));
+					}
+					catch (Exception ex)
+					{
+						MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+					}
+					LoadData();
+				}
+			}
+		}
+
+		private void ButtonRef_Click(object sender, EventArgs e)
+		{
+			LoadData();
+		}
+
+		private void ButtonSave_Click(object sender, EventArgs e)
+		{
+			if (string.IsNullOrEmpty(textBoxName.Text))
+			{
+				MessageBox.Show("Заполните название", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return;
+			}
+			if (string.IsNullOrEmpty(textBoxPrice.Text))
+			{
+				MessageBox.Show("Заполните цену", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return;
+			}
+			if (_computerComponents == null || _computerComponents.Count == 0)
+			{
+				MessageBox.Show("Заполните компоненты", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return;
+			}
+			_logger.LogInformation("Сохранение компьютера");
+			try
+			{
+				var model = new ComputerBindingModel
+				{
+					Id = _id ?? 0,
+					ComputerName = textBoxName.Text,
+					Price = Convert.ToDouble(textBoxPrice.Text),
+					ComputerComponents = _computerComponents
+				};
+				var operationResult = _id.HasValue ? _logic.Update(model) : _logic.Create(model);
+				if (!operationResult)
+				{
+					throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+			    }
+				MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+				DialogResult = DialogResult.OK;
+				Close();
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка сохранения компьютера");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
+		}
+
+		private void ButtonCancel_Click(object sender, EventArgs e)
+		{
+			DialogResult = DialogResult.Cancel;
+			Close();
+		}
+
+		private double CalcPrice()
+		{
+			double price = 0;
+			foreach (var elem in _computerComponents)
+			{
+				price += ((elem.Value.Item1?.Cost ?? 0) * elem.Value.Item2);
+			}
+			return Math.Round(price * 1.1, 2);
+		}
+
+	}
+}

ComputersShop/ComputersShopView/FormComputer.resx

@@ -0,0 +1,69 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <metadata name="ColumnId.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="ComponentColumn.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="CountColumn.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+</root>

ComputersShop/ComputersShopView/FormComputerComponent.Designer.cs

@@ -0,0 +1,119 @@
+namespace ComputersShopView
+{
+	partial class FormComputerComponent
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			this.label1 = new System.Windows.Forms.Label();
+			this.comboBoxComponent = new System.Windows.Forms.ComboBox();
+			this.label2 = new System.Windows.Forms.Label();
+			this.textBoxCount = new System.Windows.Forms.TextBox();
+			this.buttonSave = new System.Windows.Forms.Button();
+			this.buttonCancel = new System.Windows.Forms.Button();
+			this.SuspendLayout();
+			// 
+			// label1
+			// 
+			this.label1.AutoSize = true;
+			this.label1.Location = new System.Drawing.Point(12, 12);
+			this.label1.Name = "label1";
+			this.label1.Size = new System.Drawing.Size(69, 15);
+			this.label1.TabIndex = 0;
+			this.label1.Text = "Компонент";
+			// 
+			// comboBoxComponent
+			// 
+			this.comboBoxComponent.FormattingEnabled = true;
+			this.comboBoxComponent.Location = new System.Drawing.Point(87, 9);
+			this.comboBoxComponent.Name = "comboBoxComponent";
+			this.comboBoxComponent.Size = new System.Drawing.Size(278, 23);
+			this.comboBoxComponent.TabIndex = 1;
+			// 
+			// label2
+			// 
+			this.label2.AutoSize = true;
+			this.label2.Location = new System.Drawing.Point(12, 41);
+			this.label2.Name = "label2";
+			this.label2.Size = new System.Drawing.Size(72, 15);
+			this.label2.TabIndex = 2;
+			this.label2.Text = "Количество";
+			// 
+			// textBoxCount
+			// 
+			this.textBoxCount.Location = new System.Drawing.Point(87, 38);
+			this.textBoxCount.Name = "textBoxCount";
+			this.textBoxCount.Size = new System.Drawing.Size(278, 23);
+			this.textBoxCount.TabIndex = 3;
+			// 
+			// buttonSave
+			// 
+			this.buttonSave.Location = new System.Drawing.Point(209, 67);
+			this.buttonSave.Name = "buttonSave";
+			this.buttonSave.Size = new System.Drawing.Size(75, 23);
+			this.buttonSave.TabIndex = 4;
+			this.buttonSave.Text = "Сохранить";
+			this.buttonSave.UseVisualStyleBackColor = true;
+			this.buttonSave.Click += new System.EventHandler(this.ButtonSave_Click);
+			// 
+			// buttonCancel
+			// 
+			this.buttonCancel.Location = new System.Drawing.Point(290, 67);
+			this.buttonCancel.Name = "buttonCancel";
+			this.buttonCancel.Size = new System.Drawing.Size(75, 23);
+			this.buttonCancel.TabIndex = 5;
+			this.buttonCancel.Text = "Отмена";
+			this.buttonCancel.UseVisualStyleBackColor = true;
+			this.buttonCancel.Click += new System.EventHandler(this.ButtonCancel_Click);
+			// 
+			// FormComputerComponent
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.ClientSize = new System.Drawing.Size(383, 105);
+			this.Controls.Add(this.buttonCancel);
+			this.Controls.Add(this.buttonSave);
+			this.Controls.Add(this.textBoxCount);
+			this.Controls.Add(this.label2);
+			this.Controls.Add(this.comboBoxComponent);
+			this.Controls.Add(this.label1);
+			this.Name = "FormComputerComponent";
+			this.Text = "Компонент компьютера";
+			this.ResumeLayout(false);
+			this.PerformLayout();
+
+		}
+
+		#endregion
+
+		private Label label1;
+		private ComboBox comboBoxComponent;
+		private Label label2;
+		private TextBox textBoxCount;
+		private Button buttonSave;
+		private Button buttonCancel;
+	}
+}

ComputersShop/ComputersShopView/FormComputerComponent.cs

@@ -0,0 +1,90 @@
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ComputersShopView
+{
+	public partial class FormComputerComponent : Form
+	{
+		private readonly List<ComponentViewModel>? _list;
+		public int Id
+		{
+			get
+			{
+				return Convert.ToInt32(comboBoxComponent.SelectedValue);
+			}
+			set
+			{
+				comboBoxComponent.SelectedValue = value;
+			}
+		}
+		public IComponentModel? ComponentModel
+		{
+			get
+			{
+				if (_list == null)
+				{
+					return null;
+				}
+				foreach (var elem in _list)
+				{
+					if (elem.Id == Id)
+					{
+						return elem;
+					}
+				}
+				return null;
+			}
+		}
+
+		public int Count
+		{
+			get { return Convert.ToInt32(textBoxCount.Text); }
+			set { textBoxCount.Text = value.ToString(); }
+		}
+
+		public FormComputerComponent(IComponentLogic logic)
+		{
+			InitializeComponent();
+			_list = logic.ReadList(null);
+			if (_list != null)
+			{
+				comboBoxComponent.DisplayMember = "ComponentName";
+				comboBoxComponent.ValueMember = "Id";
+				comboBoxComponent.DataSource = _list;
+				comboBoxComponent.SelectedItem = null;
+			}
+		}
+
+		private void ButtonSave_Click(object sender, EventArgs e)
+		{
+			if (string.IsNullOrEmpty(textBoxCount.Text))
+			{
+				MessageBox.Show("Заполните поле Количество", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return;
+			}
+			if (comboBoxComponent.SelectedValue == null)
+			{
+				MessageBox.Show("Выберите компонент", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return;
+			}
+			DialogResult = DialogResult.OK;
+			Close();
+		}
+		private void ButtonCancel_Click(object sender, EventArgs e)
+		{
+			DialogResult = DialogResult.Cancel;
+			Close();
+		}
+
+	}
+}

ComputersShop/ComputersShopView/FormComputerComponent.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ComputersShop/ComputersShopView/FormComputers.Designer.cs

@@ -0,0 +1,114 @@
+namespace ComputersShopView
+{
+	partial class FormComputers
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			this.dataGridView = new System.Windows.Forms.DataGridView();
+			this.buttonRef = new System.Windows.Forms.Button();
+			this.buttonDel = new System.Windows.Forms.Button();
+			this.buttonUpd = new System.Windows.Forms.Button();
+			this.buttonAdd = new System.Windows.Forms.Button();
+			((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+			this.SuspendLayout();
+			// 
+			// dataGridView
+			// 
+			this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+			this.dataGridView.Location = new System.Drawing.Point(12, 12);
+			this.dataGridView.Name = "dataGridView";
+			this.dataGridView.RowTemplate.Height = 25;
+			this.dataGridView.Size = new System.Drawing.Size(441, 426);
+			this.dataGridView.TabIndex = 1;
+			// 
+			// buttonRef
+			// 
+			this.buttonRef.Location = new System.Drawing.Point(459, 134);
+			this.buttonRef.Name = "buttonRef";
+			this.buttonRef.Size = new System.Drawing.Size(147, 23);
+			this.buttonRef.TabIndex = 8;
+			this.buttonRef.Text = "Обновить";
+			this.buttonRef.UseVisualStyleBackColor = true;
+			this.buttonRef.Click += new System.EventHandler(this.ButtonRef_Click);
+			// 
+			// buttonDel
+			// 
+			this.buttonDel.Location = new System.Drawing.Point(459, 91);
+			this.buttonDel.Name = "buttonDel";
+			this.buttonDel.Size = new System.Drawing.Size(147, 23);
+			this.buttonDel.TabIndex = 7;
+			this.buttonDel.Text = "Удалить";
+			this.buttonDel.UseVisualStyleBackColor = true;
+			this.buttonDel.Click += new System.EventHandler(this.ButtonDel_Click);
+			// 
+			// buttonUpd
+			// 
+			this.buttonUpd.Location = new System.Drawing.Point(459, 50);
+			this.buttonUpd.Name = "buttonUpd";
+			this.buttonUpd.Size = new System.Drawing.Size(147, 23);
+			this.buttonUpd.TabIndex = 6;
+			this.buttonUpd.Text = "Изменить";
+			this.buttonUpd.UseVisualStyleBackColor = true;
+			this.buttonUpd.Click += new System.EventHandler(this.ButtonUpd_Click);
+			// 
+			// buttonAdd
+			// 
+			this.buttonAdd.Location = new System.Drawing.Point(459, 12);
+			this.buttonAdd.Name = "buttonAdd";
+			this.buttonAdd.Size = new System.Drawing.Size(147, 23);
+			this.buttonAdd.TabIndex = 5;
+			this.buttonAdd.Text = "Добавить";
+			this.buttonAdd.UseVisualStyleBackColor = true;
+			this.buttonAdd.Click += new System.EventHandler(this.ButtonAdd_Click);
+			// 
+			// FormComputers
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.ClientSize = new System.Drawing.Size(618, 450);
+			this.Controls.Add(this.buttonRef);
+			this.Controls.Add(this.buttonDel);
+			this.Controls.Add(this.buttonUpd);
+			this.Controls.Add(this.buttonAdd);
+			this.Controls.Add(this.dataGridView);
+			this.Name = "FormComputers";
+			this.Text = "Компьютеры";
+			this.Load += new System.EventHandler(this.FormComputers_Load);
+			((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+			this.ResumeLayout(false);
+
+		}
+
+		#endregion
+
+		private DataGridView dataGridView;
+		private Button buttonRef;
+		private Button buttonDel;
+		private Button buttonUpd;
+		private Button buttonAdd;
+	}
+}

ComputersShop/ComputersShopView/FormComputers.cs

@@ -0,0 +1,115 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ComputersShopView
+{
+	public partial class FormComputers : Form
+	{
+		private readonly ILogger _logger;
+		private readonly IComputerLogic _logic;
+
+		public FormComputers(ILogger<FormComputers> logger, IComputerLogic logic)
+		{
+			InitializeComponent();
+			_logger = logger;
+			_logic = logic;
+		}
+
+		private void FormComputers_Load(object sender, EventArgs e)
+		{
+			LoadData();
+		}
+
+		private void LoadData()
+		{
+			try
+			{
+				var list = _logic.ReadList(null);
+				if (list != null)
+				{
+					dataGridView.DataSource = list;
+					dataGridView.Columns["Id"].Visible = false;
+					dataGridView.Columns["ComputerName"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+					dataGridView.Columns["ComputerComponents"].Visible = false;
+				}
+				_logger.LogInformation("Загрузка компьютеров");
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка загрузки компьютеров");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
+		}
+
+		private void ButtonAdd_Click(object sender, EventArgs e)
+		{
+			var service = Program.ServiceProvider?.GetService(typeof(FormComputer));
+			if (service is FormComputer form)
+			{
+				if (form.ShowDialog() == DialogResult.OK)
+				{
+					LoadData();
+				}
+			}
+		}
+
+		private void ButtonUpd_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				var service = Program.ServiceProvider?.GetService(typeof(FormComputer));
+				if (service is FormComputer form)
+				{
+					form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+					if (form.ShowDialog() == DialogResult.OK)
+					{
+						LoadData();
+					}
+				}
+			}
+		}
+
+		private void ButtonDel_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
+				{
+					int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+					_logger.LogInformation("Удаление компьютера");
+					try
+					{
+						if (!_logic.Delete(new ComputerBindingModel
+						{
+							Id = id
+						}))
+						{
+							throw new Exception("Ошибка при удалении. Дополнительная информация в логах.");
+						}
+						LoadData();
+					}
+					catch (Exception ex)
+					{
+						_logger.LogError(ex, "Ошибка удаления компьютера");
+						MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+					}
+				}
+			}
+		}
+
+		private void ButtonRef_Click(object sender, EventArgs e)
+		{
+			LoadData();
+		}
+	}
+}

ComputersShop/ComputersShopView/FormComputers.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ComputersShop/ComputersShopView/FormCreateOrder.Designer.cs

@@ -0,0 +1,145 @@
+namespace ComputersShopView
+{
+	partial class FormCreateOrder
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+            this.labelComputer = new System.Windows.Forms.Label();
+            this.comboBoxComputer = new System.Windows.Forms.ComboBox();
+            this.labelCount = new System.Windows.Forms.Label();
+            this.textBoxCount = new System.Windows.Forms.TextBox();
+            this.textBoxSum = new System.Windows.Forms.TextBox();
+            this.labelSum = new System.Windows.Forms.Label();
+            this.button1 = new System.Windows.Forms.Button();
+            this.button2 = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // labelComputer
+            // 
+            this.labelComputer.AutoSize = true;
+            this.labelComputer.Location = new System.Drawing.Point(12, 15);
+            this.labelComputer.Name = "labelComputer";
+            this.labelComputer.Size = new System.Drawing.Size(74, 15);
+            this.labelComputer.TabIndex = 0;
+            this.labelComputer.Text = "Компьютер:";
+            // 
+            // comboBoxComputer
+            // 
+            this.comboBoxComputer.FormattingEnabled = true;
+            this.comboBoxComputer.Location = new System.Drawing.Point(92, 12);
+            this.comboBoxComputer.Name = "comboBoxComputer";
+            this.comboBoxComputer.Size = new System.Drawing.Size(251, 23);
+            this.comboBoxComputer.TabIndex = 1;
+            this.comboBoxComputer.SelectedIndexChanged += new System.EventHandler(this.comboBoxComputer_SelectedIndexChanged);
+            // 
+            // labelCount
+            // 
+            this.labelCount.AutoSize = true;
+            this.labelCount.Location = new System.Drawing.Point(12, 44);
+            this.labelCount.Name = "labelCount";
+            this.labelCount.Size = new System.Drawing.Size(75, 15);
+            this.labelCount.TabIndex = 2;
+            this.labelCount.Text = "Количество:";
+            // 
+            // textBoxCount
+            // 
+            this.textBoxCount.Location = new System.Drawing.Point(92, 41);
+            this.textBoxCount.Name = "textBoxCount";
+            this.textBoxCount.Size = new System.Drawing.Size(251, 23);
+            this.textBoxCount.TabIndex = 3;
+            this.textBoxCount.TextChanged += new System.EventHandler(this.TextBoxCount_TextChanged);
+            // 
+            // textBoxSum
+            // 
+            this.textBoxSum.Location = new System.Drawing.Point(92, 70);
+            this.textBoxSum.Name = "textBoxSum";
+            this.textBoxSum.ReadOnly = true;
+            this.textBoxSum.Size = new System.Drawing.Size(251, 23);
+            this.textBoxSum.TabIndex = 5;
+            // 
+            // labelSum
+            // 
+            this.labelSum.AutoSize = true;
+            this.labelSum.Location = new System.Drawing.Point(12, 73);
+            this.labelSum.Name = "labelSum";
+            this.labelSum.Size = new System.Drawing.Size(48, 15);
+            this.labelSum.TabIndex = 4;
+            this.labelSum.Text = "Сумма:";
+            // 
+            // button1
+            // 
+            this.button1.Location = new System.Drawing.Point(187, 99);
+            this.button1.Name = "button1";
+            this.button1.Size = new System.Drawing.Size(75, 23);
+            this.button1.TabIndex = 6;
+            this.button1.Text = "Сохранить";
+            this.button1.UseVisualStyleBackColor = true;
+            this.button1.Click += new System.EventHandler(this.ButtonSave_Click);
+            // 
+            // button2
+            // 
+            this.button2.Location = new System.Drawing.Point(268, 99);
+            this.button2.Name = "button2";
+            this.button2.Size = new System.Drawing.Size(75, 23);
+            this.button2.TabIndex = 7;
+            this.button2.Text = "Отмена";
+            this.button2.UseVisualStyleBackColor = true;
+            this.button2.Click += new System.EventHandler(this.ButtonCancel_Click);
+            // 
+            // FormCreateOrder
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(357, 130);
+            this.Controls.Add(this.button2);
+            this.Controls.Add(this.button1);
+            this.Controls.Add(this.textBoxSum);
+            this.Controls.Add(this.labelSum);
+            this.Controls.Add(this.textBoxCount);
+            this.Controls.Add(this.labelCount);
+            this.Controls.Add(this.comboBoxComputer);
+            this.Controls.Add(this.labelComputer);
+            this.Name = "FormCreateOrder";
+            this.Text = "Заказ";
+            this.Load += new System.EventHandler(this.FormCreateOrder_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+		}
+
+		#endregion
+
+		private Label labelComputer;
+		private ComboBox comboBoxComputer;
+		private Label labelCount;
+		private TextBox textBoxCount;
+		private TextBox textBoxSum;
+		private Label labelSum;
+		private Button button1;
+		private Button button2;
+	}
+}

ComputersShop/ComputersShopView/FormCreateOrder.cs

@@ -0,0 +1,127 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ComputersShopView
+{
+	public partial class FormCreateOrder : Form
+	{
+		private readonly ILogger _logger;
+		private readonly IComputerLogic _logicC;
+		private readonly IOrderLogic _logicO;
+
+		public FormCreateOrder(ILogger<FormCreateOrder> logger, IComputerLogic logicC, IOrderLogic logicO)
+		{
+			InitializeComponent();
+			_logger = logger;
+			_logicC = logicC;
+			_logicO = logicO;
+		}
+
+		private void FormCreateOrder_Load(object sender, EventArgs e)
+		{
+			_logger.LogInformation("Загрузка компьютеров для заказа");
+
+			try
+			{
+				var list = _logicC.ReadList(null);
+				if (list != null)
+				{
+					comboBoxComputer.DisplayMember = "ComputerName";
+					comboBoxComputer.ValueMember = "Id";
+					comboBoxComputer.DataSource = list;
+					comboBoxComputer.SelectedItem = null;
+				}
+
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка загрузки списка компьютеров");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
+		}
+
+		private void CalcSum()
+		{
+			if (comboBoxComputer.SelectedValue != null && !string.IsNullOrEmpty(textBoxCount.Text))
+			{
+				try
+				{
+					int id = Convert.ToInt32(comboBoxComputer.SelectedValue);
+					var Computer = _logicC.ReadElement(new ComputerSearchModel
+					{
+						Id = id
+					});
+					int count = Convert.ToInt32(textBoxCount.Text);
+					textBoxSum.Text = Math.Round(count * (Computer?.Price ?? 0), 2).ToString();
+					_logger.LogInformation("Расчет суммы заказа");
+				}
+				catch (Exception ex)
+				{
+					_logger.LogError(ex, "Ошибка расчета суммы заказа");
+					MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+					MessageBoxIcon.Error);
+				}
+			}
+		}
+		private void TextBoxCount_TextChanged(object sender, EventArgs e)
+		{
+			CalcSum();
+		}
+		private void comboBoxComputer_SelectedIndexChanged(object sender, EventArgs e)
+		{
+			CalcSum();
+		}
+		private void ButtonSave_Click(object sender, EventArgs e)
+		{
+			if (string.IsNullOrEmpty(textBoxCount.Text))
+			{
+				MessageBox.Show("Заполните поле Количество", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return;
+			}
+			if (comboBoxComputer.SelectedValue == null)
+			{
+				MessageBox.Show("Выберите компьютер", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return;
+			}
+			_logger.LogInformation("Создание заказа");
+			try
+			{
+				var operationResult = _logicO.CreateOrder(new OrderBindingModel
+				{
+					ComputerId = Convert.ToInt32(comboBoxComputer.SelectedValue),
+					Count = Convert.ToInt32(textBoxCount.Text),
+					Sum = Convert.ToDouble(textBoxSum.Text)
+				});
+				if (!operationResult)
+				{
+					throw new Exception("Ошибка при создании заказа. Дополнительная информация в логах.");
+			    }
+				MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+				DialogResult = DialogResult.OK;
+				Close();
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка создания заказа");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
+		}
+		private void ButtonCancel_Click(object sender, EventArgs e)
+		{
+			DialogResult = DialogResult.Cancel;
+			Close();
+		}
+
+	}
+}

ComputersShop/ComputersShopView/FormCreateOrder.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ComputersShop/ComputersShopView/FormMain.Designer.cs

@@ -0,0 +1,174 @@
+namespace ComputersShopView
+{
+	partial class FormMain
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+            this.menuStrip = new System.Windows.Forms.MenuStrip();
+            this.dictionaryToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.computerToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.componentsToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.dataGridView = new System.Windows.Forms.DataGridView();
+            this.buttonCreateOrder = new System.Windows.Forms.Button();
+            this.buttonTakeOrderInWork = new System.Windows.Forms.Button();
+            this.buttonOrderReady = new System.Windows.Forms.Button();
+            this.buttonIssuedOrder = new System.Windows.Forms.Button();
+            this.buttonRef = new System.Windows.Forms.Button();
+            this.menuStrip.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // menuStrip
+            // 
+            this.menuStrip.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
+            this.dictionaryToolStripMenuItem});
+            this.menuStrip.Location = new System.Drawing.Point(0, 0);
+            this.menuStrip.Name = "menuStrip";
+            this.menuStrip.Size = new System.Drawing.Size(1047, 24);
+            this.menuStrip.TabIndex = 0;
+            this.menuStrip.Text = "menuStrip1";
+            // 
+            // dictionaryToolStripMenuItem
+            // 
+            this.dictionaryToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
+            this.computerToolStripMenuItem,
+            this.componentsToolStripMenuItem});
+            this.dictionaryToolStripMenuItem.Name = "dictionaryToolStripMenuItem";
+            this.dictionaryToolStripMenuItem.Size = new System.Drawing.Size(94, 20);
+            this.dictionaryToolStripMenuItem.Text = "Cправочники";
+            // 
+            // computerToolStripMenuItem
+            // 
+            this.computerToolStripMenuItem.Name = "computerToolStripMenuItem";
+            this.computerToolStripMenuItem.Size = new System.Drawing.Size(180, 22);
+            this.computerToolStripMenuItem.Text = "Компьютеры";
+            this.computerToolStripMenuItem.Click += new System.EventHandler(this.ComputersToolStripMenuItem_Click);
+            // 
+            // componentsToolStripMenuItem
+            // 
+            this.componentsToolStripMenuItem.Name = "componentsToolStripMenuItem";
+            this.componentsToolStripMenuItem.Size = new System.Drawing.Size(180, 22);
+            this.componentsToolStripMenuItem.Text = "Компоненты";
+            this.componentsToolStripMenuItem.Click += new System.EventHandler(this.ComponentsToolStripMenuItem_Click);
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(12, 27);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowTemplate.Height = 25;
+            this.dataGridView.Size = new System.Drawing.Size(817, 411);
+            this.dataGridView.TabIndex = 1;
+            // 
+            // buttonCreateOrder
+            // 
+            this.buttonCreateOrder.Location = new System.Drawing.Point(835, 50);
+            this.buttonCreateOrder.Name = "buttonCreateOrder";
+            this.buttonCreateOrder.Size = new System.Drawing.Size(200, 23);
+            this.buttonCreateOrder.TabIndex = 2;
+            this.buttonCreateOrder.Text = "Создать заказ";
+            this.buttonCreateOrder.UseVisualStyleBackColor = true;
+            this.buttonCreateOrder.Click += new System.EventHandler(this.ButtonCreateOrder_Click);
+            // 
+            // buttonTakeOrderInWork
+            // 
+            this.buttonTakeOrderInWork.Location = new System.Drawing.Point(835, 101);
+            this.buttonTakeOrderInWork.Name = "buttonTakeOrderInWork";
+            this.buttonTakeOrderInWork.Size = new System.Drawing.Size(200, 23);
+            this.buttonTakeOrderInWork.TabIndex = 3;
+            this.buttonTakeOrderInWork.Text = "Отдать на выполнение";
+            this.buttonTakeOrderInWork.UseVisualStyleBackColor = true;
+            this.buttonTakeOrderInWork.Click += new System.EventHandler(this.ButtonTakeOrderInWork_Click);
+            // 
+            // buttonOrderReady
+            // 
+            this.buttonOrderReady.Location = new System.Drawing.Point(835, 156);
+            this.buttonOrderReady.Name = "buttonOrderReady";
+            this.buttonOrderReady.Size = new System.Drawing.Size(200, 23);
+            this.buttonOrderReady.TabIndex = 4;
+            this.buttonOrderReady.Text = "Заказ готов";
+            this.buttonOrderReady.UseVisualStyleBackColor = true;
+            this.buttonOrderReady.Click += new System.EventHandler(this.ButtonOrderReady_Click);
+            // 
+            // buttonIssuedOrder
+            // 
+            this.buttonIssuedOrder.Location = new System.Drawing.Point(835, 212);
+            this.buttonIssuedOrder.Name = "buttonIssuedOrder";
+            this.buttonIssuedOrder.Size = new System.Drawing.Size(200, 23);
+            this.buttonIssuedOrder.TabIndex = 5;
+            this.buttonIssuedOrder.Text = "Заказ выдан";
+            this.buttonIssuedOrder.UseVisualStyleBackColor = true;
+            this.buttonIssuedOrder.Click += new System.EventHandler(this.ButtonIssuedOrder_Click);
+            // 
+            // buttonRef
+            // 
+            this.buttonRef.Location = new System.Drawing.Point(835, 269);
+            this.buttonRef.Name = "buttonRef";
+            this.buttonRef.Size = new System.Drawing.Size(200, 23);
+            this.buttonRef.TabIndex = 6;
+            this.buttonRef.Text = "Обновить список";
+            this.buttonRef.UseVisualStyleBackColor = true;
+            this.buttonRef.Click += new System.EventHandler(this.ButtonRef_Click);
+            // 
+            // FormMain
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(1047, 450);
+            this.Controls.Add(this.buttonRef);
+            this.Controls.Add(this.buttonIssuedOrder);
+            this.Controls.Add(this.buttonOrderReady);
+            this.Controls.Add(this.buttonTakeOrderInWork);
+            this.Controls.Add(this.buttonCreateOrder);
+            this.Controls.Add(this.dataGridView);
+            this.Controls.Add(this.menuStrip);
+            this.MainMenuStrip = this.menuStrip;
+            this.Name = "FormMain";
+            this.Text = "Магазин электроники";
+            this.Load += new System.EventHandler(this.FormMain_Load);
+            this.menuStrip.ResumeLayout(false);
+            this.menuStrip.PerformLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+		}
+
+		#endregion
+
+		private MenuStrip menuStrip;
+		private ToolStripMenuItem dictionaryToolStripMenuItem;
+		private DataGridView dataGridView;
+		private Button buttonCreateOrder;
+		private Button buttonTakeOrderInWork;
+		private Button buttonOrderReady;
+		private Button buttonIssuedOrder;
+		private Button buttonRef;
+		private ToolStripMenuItem computerToolStripMenuItem;
+		private ToolStripMenuItem componentsToolStripMenuItem;
+	}
+}

ComputersShop/ComputersShopView/FormMain.cs

@@ -0,0 +1,173 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopDataModels.Enums;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ComputersShopView
+{
+	public partial class FormMain : Form
+	{
+		private readonly ILogger _logger;
+		private readonly IOrderLogic _orderLogic;
+
+		public FormMain(ILogger<FormMain> logger, IOrderLogic orderLogic)
+		{
+			InitializeComponent();
+			_logger = logger;
+			_orderLogic = orderLogic;
+		}
+
+		private void FormMain_Load(object sender, EventArgs e)
+		{
+			LoadData();
+		}
+		private void LoadData()
+		{
+			_logger.LogInformation("Загрузка заказов");
+			try
+			{
+				var list = _orderLogic.ReadList(null);
+				if (list != null)
+				{
+					dataGridView.DataSource = list;
+					dataGridView.Columns["ComputerId"].Visible = false;
+				}
+				_logger.LogInformation("Загрузка заказов");
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, "Ошибка загрузки заказов");
+				MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
+		}
+		private void ComponentsToolStripMenuItem_Click(object sender, EventArgs e)
+		{
+			var service = Program.ServiceProvider?.GetService(typeof(FormComponents));
+			if (service is FormComponents form)
+			{
+				form.ShowDialog();
+			}
+		}
+		private void ComputersToolStripMenuItem_Click(object sender, EventArgs e)
+		{
+			var service = Program.ServiceProvider?.GetService(typeof(FormComputers));
+			if (service is FormComputers form)
+			{
+				form.ShowDialog();
+			}
+		}
+		private void ButtonCreateOrder_Click(object sender, EventArgs e)
+		{
+			var service = Program.ServiceProvider?.GetService(typeof(FormCreateOrder));
+			if (service is FormCreateOrder form)
+			{
+				form.ShowDialog();
+				LoadData();
+			}
+		}
+		private void ButtonTakeOrderInWork_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+				_logger.LogInformation("Заказ №{id}. Меняется статус на 'В работе'", id);
+				try
+				{
+					var operationResult = _orderLogic.TakeOrderInWork(new OrderBindingModel
+					{
+						Id = id,
+						ComputerId = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["ComputerId"].Value),
+						Status = Enum.Parse<OrderStatus>(dataGridView.SelectedRows[0].Cells["Status"].Value.ToString()),
+						Count = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Count"].Value),
+						Sum = double.Parse(dataGridView.SelectedRows[0].Cells["Sum"].Value.ToString()),
+						DateCreate = DateTime.Parse(dataGridView.SelectedRows[0].Cells["DateCreate"].Value.ToString())
+					});
+					if (!operationResult)
+					{
+						throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+				    }
+					LoadData();
+				}
+				catch (Exception ex)
+				{
+					_logger.LogError(ex, "Ошибка передачи заказа в работу");
+					MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				}
+			}
+		}
+		private void ButtonOrderReady_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+				_logger.LogInformation("Заказ №{id}. Меняется статус на 'Готов'", id);
+				try
+				{
+					var operationResult = _orderLogic.FinishOrder(new OrderBindingModel
+					{
+						Id = id,
+						ComputerId = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["ComputerId"].Value),
+						Status = Enum.Parse<OrderStatus>(dataGridView.SelectedRows[0].Cells["Status"].Value.ToString()),
+						Count = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Count"].Value),
+						Sum = double.Parse(dataGridView.SelectedRows[0].Cells["Sum"].Value.ToString()),
+						DateCreate = DateTime.Parse(dataGridView.SelectedRows[0].Cells["DateCreate"].Value.ToString())
+					});
+					if (!operationResult)
+					{
+						throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+				    }
+					LoadData();
+				}
+				catch (Exception ex)
+				{
+					_logger.LogError(ex, "Ошибка отметки о готовности заказа");
+					MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				}
+			}
+		}
+		private void ButtonIssuedOrder_Click(object sender, EventArgs e)
+		{
+			if (dataGridView.SelectedRows.Count == 1)
+			{
+				int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+				_logger.LogInformation("Заказ №{id}. Меняется статус на 'Выдан'", id);
+				try
+				{
+					var operationResult = _orderLogic.DeliveryOrder(new OrderBindingModel
+					{
+						Id = id,
+						ComputerId = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["ComputerId"].Value),
+						Status = Enum.Parse<OrderStatus>(dataGridView.SelectedRows[0].Cells["Status"].Value.ToString()),
+						Count = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Count"].Value),
+						Sum = double.Parse(dataGridView.SelectedRows[0].Cells["Sum"].Value.ToString()),
+						DateCreate = DateTime.Parse(dataGridView.SelectedRows[0].Cells["DateCreate"].Value.ToString())
+					});
+					if (!operationResult)
+					{
+						throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+				    }
+					_logger.LogInformation("Заказ №{id} выдан", id);
+					LoadData();
+				}
+				catch (Exception ex)
+				{
+					_logger.LogError(ex, "Ошибка отметки о выдачи заказа");
+					MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				}
+			}
+		}
+		private void ButtonRef_Click(object sender, EventArgs e)
+		{
+			LoadData();
+		}
+	}
+}

ComputersShop/ComputersShopView/FormMain.resx

@@ -0,0 +1,63 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <metadata name="menuStrip.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+</root>

ComputersShop/ComputersShopView/Program.cs

@@ -0,0 +1,55 @@
+using ComputersShopBusinessLogic.BusinessLogics;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopDataBaseImplement.Implements;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using NLog.Extensions.Logging;
+
+
+namespace ComputersShopView
+{
+    internal static class Program
+	{
+		private static ServiceProvider? _serviceProvider;
+		public static ServiceProvider? ServiceProvider => _serviceProvider;
+		/// <summary>
+		///  The main entry point for the application.
+		/// </summary>
+		[STAThread]
+		static void Main()
+		{
+			// To customize application configuration such as set high DPI settings or default font,
+			// see https://aka.ms/applicationconfiguration.
+			ApplicationConfiguration.Initialize();
+			var services = new ServiceCollection();
+			ConfigureServices(services);
+			_serviceProvider = services.BuildServiceProvider();
+			Application.Run(_serviceProvider.GetRequiredService<FormMain>());
+		}
+
+		private static void ConfigureServices(ServiceCollection services)
+		{
+			services.AddLogging(option =>
+			{
+				option.SetMinimumLevel(LogLevel.Information);
+				option.AddNLog("nlog.config");
+			});
+			services.AddTransient<IComponentStorage, ComponentStorage>();
+			services.AddTransient<IComputerStorage, ComputerStorage>();
+			services.AddTransient<IOrderStorage, OrderStorage>();
+
+			services.AddTransient<IComponentLogic, ComponentLogic>();
+			services.AddTransient<IComputerLogic, ComputerLogic>();
+			services.AddTransient<IOrderLogic, OrderLogic>();
+
+			services.AddTransient<FormMain>();
+			services.AddTransient<FormComponent>();
+			services.AddTransient<FormComponents>();
+			services.AddTransient<FormCreateOrder>();
+			services.AddTransient<FormComputer>();
+			services.AddTransient<FormComputers>();
+			services.AddTransient<FormComputerComponent>();
+		}
+	}
+}

ComputersShop/СomputersShopDataModels/Enums/OrderStatus.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Enums
+{
+    public enum OrderStatus
+    {
+        Неизвестен = -1,
+        Принят = 0,
+        Выполняется = 1,
+        Готов = 2,
+        Выдан = 3
+    }
+}

ComputersShop/СomputersShopDataModels/IId.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels
+{
+    public interface IId
+    {
+        int Id { get; }
+    }
+}

ComputersShop/СomputersShopDataModels/Models/IComponentModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Models
+{
+    public interface IComponentModel : IId
+    {
+        string ComponentName { get; }
+        double Cost { get; }
+    }
+}

ComputersShop/СomputersShopDataModels/Models/IComputerModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Models
+{
+    public interface IComputerModel : IId
+    {
+        string ComputerName { get; }
+        double Price { get; }
+        Dictionary<int, (IComponentModel, int)> ComputerComponents { get; }
+    }
+}

ComputersShop/СomputersShopDataModels/Models/IOrderModel.cs

@@ -0,0 +1,19 @@
+using ComputersShopDataModels.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Models
+{
+    public interface IOrderModel : IId
+    {
+        int ComputerId { get; }
+        int Count { get; }
+        double Sum { get; }
+        OrderStatus Status { get; }
+        DateTime DateCreate { get; }
+        DateTime? DateImplement { get; }
+    }
+}

ComputersShop/СomputersShopDataModels/СomputersShopDataModels.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+  </ItemGroup>
+
+</Project>