Готовая 2 лаб. работа.

JewelryStore/JewelryStore.sln

@@ -3,15 +3,17 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.3.32819.101
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "JewelryStore", "JewelryStore\JewelryStore.csproj", "{187BBC53-52AA-4C47-B98B-E119AE64ADA4}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStore", "JewelryStore\JewelryStore.csproj", "{187BBC53-52AA-4C47-B98B-E119AE64ADA4}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "JewelryStoreDataModels", "JewelryShopDataModels\JewelryStoreDataModels.csproj", "{C6D79969-6DC9-4F60-BCC4-A679CB472595}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStoreDataModels", "JewelryShopDataModels\JewelryStoreDataModels.csproj", "{C6D79969-6DC9-4F60-BCC4-A679CB472595}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStoreContracts", "JewelryStoreContracts\JewelryStoreContracts.csproj", "{F7C956E1-26FC-4914-9ABC-71A16F88B7E8}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "JewelryStoreBusinessLogic", "JewelryStoreBusinessLogic\JewelryStoreBusinessLogic.csproj", "{B4D1E829-A99F-47D2-B06D-5042CE058CA9}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStoreBusinessLogic", "JewelryStoreBusinessLogic\JewelryStoreBusinessLogic.csproj", "{B4D1E829-A99F-47D2-B06D-5042CE058CA9}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "JewelryStoreListImplement", "JewelryStoreListImplement\JewelryStoreListImplement.csproj", "{12C6B5CD-CE5C-4095-91B8-53A5CB08E780}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JewelryStoreListImplement", "JewelryStoreListImplement\JewelryStoreListImplement.csproj", "{12C6B5CD-CE5C-4095-91B8-53A5CB08E780}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "JewelryStoreFileImplement", "JewelryStoreFileImplement\JewelryStoreFileImplement.csproj", "{12AA98A9-D1DA-4DC3-B98C-105004B8498A}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -39,6 +41,10 @@ Global
 		{12C6B5CD-CE5C-4095-91B8-53A5CB08E780}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{12C6B5CD-CE5C-4095-91B8-53A5CB08E780}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{12C6B5CD-CE5C-4095-91B8-53A5CB08E780}.Release|Any CPU.Build.0 = Release|Any CPU
+		{12AA98A9-D1DA-4DC3-B98C-105004B8498A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{12AA98A9-D1DA-4DC3-B98C-105004B8498A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{12AA98A9-D1DA-4DC3-B98C-105004B8498A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{12AA98A9-D1DA-4DC3-B98C-105004B8498A}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

JewelryStore/JewelryStore/FormComponents.Designer.cs

@@ -38,13 +38,20 @@
             // 
             // dataGridView
             // 
+            this.dataGridView.AllowUserToAddRows = false;
+            this.dataGridView.AllowUserToDeleteRows = false;
             this.dataGridView.BackgroundColor = System.Drawing.SystemColors.Window;
             this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
-            this.dataGridView.Location = new System.Drawing.Point(12, 11);
+            this.dataGridView.Dock = System.Windows.Forms.DockStyle.Left;
+            this.dataGridView.Location = new System.Drawing.Point(0, 0);
+            this.dataGridView.MultiSelect = false;
             this.dataGridView.Name = "dataGridView";
+            this.dataGridView.ReadOnly = true;
+            this.dataGridView.RowHeadersVisible = false;
             this.dataGridView.RowHeadersWidth = 62;
             this.dataGridView.RowTemplate.Height = 33;
-            this.dataGridView.Size = new System.Drawing.Size(525, 427);
+            this.dataGridView.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
+            this.dataGridView.Size = new System.Drawing.Size(525, 450);
             this.dataGridView.TabIndex = 0;
             // 
             // buttonAdd

JewelryStore/JewelryStore/FormCreateOrder.Designer.cs

@@ -87,6 +87,7 @@
             // 
             this.textBoxSum.Location = new System.Drawing.Point(134, 104);
             this.textBoxSum.Name = "textBoxSum";
+            this.textBoxSum.ReadOnly = true;
             this.textBoxSum.Size = new System.Drawing.Size(291, 31);
             this.textBoxSum.TabIndex = 5;
             // 

JewelryStore/JewelryStore/FormJewel.Designer.cs

@@ -57,6 +57,7 @@
             this.Count});
             this.dataGridView.Location = new System.Drawing.Point(6, 25);
             this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowHeadersVisible = false;
             this.dataGridView.RowHeadersWidth = 62;
             this.dataGridView.RowTemplate.Height = 33;
             this.dataGridView.Size = new System.Drawing.Size(468, 325);
@@ -112,6 +113,7 @@
             // 
             // textBoxPrice
             // 
+            this.textBoxPrice.Enabled = false;
             this.textBoxPrice.Location = new System.Drawing.Point(124, 57);
             this.textBoxPrice.Name = "textBoxPrice";
             this.textBoxPrice.Size = new System.Drawing.Size(267, 31);

JewelryStore/JewelryStore/FormJewel.resx

@@ -66,13 +66,4 @@
   <metadata name="Count.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
   </metadata>
-  <metadata name="JewelId.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
-    <value>True</value>
-  </metadata>
-  <metadata name="ComponentName.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
-    <value>True</value>
-  </metadata>
-  <metadata name="Count.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
-    <value>True</value>
-  </metadata>
 </root>

JewelryStore/JewelryStore/FormJewelComponent.Designer.cs

@@ -56,6 +56,7 @@
             // 
             // comboBoxComponent
             // 
+            this.comboBoxComponent.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
             this.comboBoxComponent.FormattingEnabled = true;
             this.comboBoxComponent.Location = new System.Drawing.Point(148, 18);
             this.comboBoxComponent.Name = "comboBoxComponent";

JewelryStore/JewelryStore/FormMain.Designer.cs

@@ -78,12 +78,16 @@
             // 
             // dataGridView
             // 
+            this.dataGridView.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+            | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
             this.dataGridView.BackgroundColor = System.Drawing.SystemColors.Window;
             this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
             this.dataGridView.Location = new System.Drawing.Point(12, 36);
             this.dataGridView.Name = "dataGridView";
             this.dataGridView.RowHeadersWidth = 62;
             this.dataGridView.RowTemplate.Height = 33;
+            this.dataGridView.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
             this.dataGridView.Size = new System.Drawing.Size(851, 402);
             this.dataGridView.TabIndex = 1;
             // 

JewelryStore/JewelryStore/JewelryStore.csproj

@@ -22,7 +22,14 @@
   <ItemGroup>
     <ProjectReference Include="..\JewelryStoreBusinessLogic\JewelryStoreBusinessLogic.csproj" />
     <ProjectReference Include="..\JewelryStoreContracts\JewelryStoreContracts.csproj" />
+    <ProjectReference Include="..\JewelryStoreFileImplement\JewelryStoreFileImplement.csproj" />
     <ProjectReference Include="..\JewelryStoreListImplement\JewelryStoreListImplement.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Update="nlog.config">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>

JewelryStore/JewelryStore/Program.cs

@@ -1,6 +1,6 @@
 using JewelryStoreContracts.BusinessLogicsContracts;
 using JewelryStoreContracts.StoragesContracts;
-using JewelryStoreListImplement.Implements;
+using JewelryStoreFileImplement.Implements;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using NLog.Extensions.Logging;

JewelryStore/JewelryStoreFileImplement/DataFileSingleton.cs

@@ -0,0 +1,55 @@
+using JewelryStoreFileImplement.Models;
+using System.Xml.Linq;
+
+namespace JewelryStoreFileImplement
+{
+    public class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+        private readonly string ComponentFileName = "Component.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string JewelFileName = "Jewel.xml";
+        public List<Component> Components { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Jewel> Jewels { 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 SaveJewels() => SaveData(Jewels, JewelFileName, "Jewels", x => x.GetXElement);
+
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+            Jewels = LoadData(JewelFileName, "Jewel", x => Jewel.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);
+            }
+        }
+    }
+}

JewelryStore/JewelryStoreFileImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,90 @@
+using JewelryStoreContracts.BindingModels;
+using JewelryStoreContracts.SearchModels;
+using JewelryStoreContracts.StoragesContracts;
+using JewelryStoreContracts.ViewModels;
+using JewelryStoreFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JewelryStoreFileImplement.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;
+        }
+    }
+}

JewelryStore/JewelryStoreFileImplement/Implements/JewelStorage.cs

@@ -0,0 +1,85 @@
+using JewelryStoreContracts.BindingModels;
+using JewelryStoreContracts.SearchModels;
+using JewelryStoreContracts.StoragesContracts;
+using JewelryStoreContracts.ViewModels;
+using JewelryStoreFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JewelryStoreFileImplement.Implements
+{
+    public class JewelStorage : IJewelStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public JewelStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public JewelViewModel? GetElement(JewelSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.JewelName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Jewels.FirstOrDefault(x => (!string.IsNullOrEmpty(model.JewelName) && x.JewelName == model.JewelName) || 
+            (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public List<JewelViewModel> GetFilteredList(JewelSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.JewelName))
+            {
+                return new();
+            }
+            return source.Jewels.Where(x => x.JewelName.Contains(model.JewelName)).Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<JewelViewModel> GetFullList()
+        {
+            return source.Jewels.Select(x => x.GetViewModel).ToList();
+        }
+
+        public JewelViewModel? Insert(JewelBindingModel model)
+        {
+            model.Id = source.Jewels.Count > 0 ? source.Jewels.Max(x => x.Id) + 1 : 1;
+            var newJewel = Jewel.Create(model);
+            if (newJewel == null)
+            {
+                return null;
+            }
+            source.Jewels.Add(newJewel);
+            source.SaveJewels();
+
+            return newJewel.GetViewModel;
+        }
+
+        public JewelViewModel? Update(JewelBindingModel model)
+        {
+            var jewel = source.Jewels.FirstOrDefault(x => x.Id == model.Id);
+            if (jewel == null)
+            {
+                return null;
+            }
+            jewel.Update(model);
+            source.SaveJewels();
+            return jewel.GetViewModel;
+        }
+
+        public JewelViewModel? Delete(JewelBindingModel model)
+        {
+            var jewel = source.Jewels.FirstOrDefault(x => x.Id == model.Id);
+            if (jewel == null)
+            {
+                return null;
+            }
+            source.Jewels.Remove(jewel);
+            source.SaveJewels();
+            return jewel.GetViewModel;
+        }
+    }
+}

JewelryStore/JewelryStoreFileImplement/Implements/OrderStorage.cs

@@ -0,0 +1,83 @@
+using JewelryStoreContracts.BindingModels;
+using JewelryStoreContracts.SearchModels;
+using JewelryStoreContracts.StoragesContracts;
+using JewelryStoreContracts.ViewModels;
+using JewelryStoreFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace JewelryStoreFileImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataFileSingleton _source;
+        public OrderStorage()
+        {
+            _source = DataFileSingleton.GetInstance();
+        }
+        public List<OrderViewModel> GetFullList()
+        {
+            return _source.Orders.Select(x => SAddJewelName(x.GetViewModel)).ToList();
+        }
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return new();
+            }
+            return _source.Orders.Where(x => x.Id == model.Id).Select(x => SAddJewelName(x.GetViewModel)).ToList();
+        }
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            return SAddJewelName(_source.Orders.FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id)?.GetViewModel);
+        }
+        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 SAddJewelName(newOrder.GetViewModel);
+        }
+        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 SAddJewelName(order.GetViewModel);
+        }
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            var element = _source.Orders.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                _source.Orders.Remove(element);
+                _source.SaveOrders();
+                return SAddJewelName(element.GetViewModel);
+            }
+            return null;
+        }
+
+        public OrderViewModel SAddJewelName(OrderViewModel fullModel)
+        {
+            string? jewelName = _source.Jewels.FirstOrDefault(x => x.Id == fullModel?.JewelId)?.JewelName;
+            if (jewelName != null) fullModel.JewelName = jewelName;
+            return fullModel;
+        }
+    }
+}

JewelryStore/JewelryStoreFileImplement/JewelryStoreFileImplement.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="..\JewelryShopDataModels\JewelryStoreDataModels.csproj" />
+    <ProjectReference Include="..\JewelryStoreContracts\JewelryStoreContracts.csproj" />
+  </ItemGroup>
+
+</Project>

JewelryStore/JewelryStoreFileImplement/Models/Component.cs

@@ -0,0 +1,69 @@
+using JewelryStoreContracts.BindingModels;
+using JewelryStoreContracts.ViewModels;
+using JewelryStoreDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace JewelryStoreFileImplement.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()));
+    }
+}

JewelryStore/JewelryStoreFileImplement/Models/Jewel.cs

@@ -0,0 +1,93 @@
+using JewelryStoreContracts.BindingModels;
+using JewelryStoreContracts.ViewModels;
+using JewelryStoreDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace JewelryStoreFileImplement.Models
+{
+    public class Jewel : IJewelModel
+    {
+        public int Id { get; private set; }
+        public string JewelName { 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)>? _jewelComponents = null;
+        public Dictionary<int, (IComponentModel, int)> JewelComponents
+        {
+            get
+            {
+                if (_jewelComponents == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _jewelComponents = Components.ToDictionary(x => x.Key, y =>
+                    ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!, y.Value));
+                }
+                return _jewelComponents;
+            }
+        }
+
+        public static Jewel? Create(JewelBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Jewel()
+            {
+                Id = model.Id,
+                JewelName = model.JewelName,
+                Price = model.Price,
+                Components = model.JewelComponents.ToDictionary(x => x.Key, x => x.Value.Item2)
+            };
+        }
+
+        public static Jewel? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Jewel()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                JewelName = element.Element("JewelName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Components = element.Element("JewelComponents")!.Elements("JewelComponent")
+                .ToDictionary(x => Convert.ToInt32(x.Element("Key")?.Value), x => Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+
+        public void Update(JewelBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            JewelName = model.JewelName;
+            Price = model.Price;
+            Components = model.JewelComponents.ToDictionary(x => x.Key, x => x.Value.Item2);
+            _jewelComponents = null;
+        }
+        
+        public JewelViewModel GetViewModel => new()
+        {
+            Id = Id,
+            JewelName = JewelName,
+            Price = Price,
+            JewelComponents = JewelComponents
+        };
+
+        public XElement GetXElement => new("Jewel", 
+                                       new XAttribute("Id", Id),
+                                       new XElement("JewelName", JewelName),
+                                       new XElement("Price", Price.ToString()),
+                                       new XElement("JewelComponents", Components.Select(x =>
+                                       new XElement("JewelComponent", new XElement("Key", x.Key), new XElement("Value", x.Value)))
+                                       .ToArray()));
+    }
+}

JewelryStore/JewelryStoreFileImplement/Models/Order.cs

@@ -0,0 +1,95 @@
+using JewelryStoreContracts.BindingModels;
+using JewelryStoreContracts.ViewModels;
+using JewelryStoreDataModels.Enums;
+using JewelryStoreDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace JewelryStoreFileImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int JewelId { 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,
+                JewelId = model.JewelId,
+                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;
+            }
+
+            return new Order()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                JewelId = Convert.ToInt32(element.Element("JewelId")!.Value),
+                Sum = Convert.ToDouble(element.Element("Sum")!.Value),
+                Count = Convert.ToInt32(element.Element("Count")!.Value),
+                Status = (OrderStatus)Enum.Parse(typeof(OrderStatus), element.Element("Status")!.Value),
+                DateCreate = Convert.ToDateTime(element.Element("DateCreate")!.Value),
+                DateImplement = string.IsNullOrEmpty(element.Element("DateImplement")!.Value) ? null : Convert.ToDateTime(element.Element("DateImplement")!.Value)
+            };
+        }
+
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            JewelId = model.JewelId;
+            Count = model.Count;
+            Sum = model.Sum;
+            Status = model.Status;
+            DateCreate = model.DateCreate;
+            DateImplement = model.DateImplement;
+        }
+
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            JewelId = JewelId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement
+        };
+
+        public XElement GetXElement => new("Order",
+                                       new XAttribute("Id", Id),
+                                       new XElement("JewelId", JewelId),
+                                       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()));
+    }
+}