diff --git a/FurnitureCompany/FurnitureCompany/Entities/Client.cs b/FurnitureCompany/FurnitureCompany/Entities/Client.cs
new file mode 100644
index 0000000..cd724c5
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Entities/Client.cs
@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Entities;
+
+public class Client
+{
+    public int Id { get; private set; }
+
+    public string Name { get; private set; } = string.Empty;
+
+    public string Address { get; private set; } = string.Empty;
+
+    public int Age { get; private set; }
+
+    public double Earnings { get; private set; }
+
+    public static Client CreateEntity(int id, string name, string address, int age, double earnings)
+    {
+        return new Client
+        {
+            Id = id,
+            Name = name ?? string.Empty,
+            Address = address ?? string.Empty,
+            Age = age,
+            Earnings = earnings
+        };
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Entities/Delivery.cs b/FurnitureCompany/FurnitureCompany/Entities/Delivery.cs
new file mode 100644
index 0000000..00e3d6c
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Entities/Delivery.cs
@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Entities;
+
+public class Delivery
+{
+    public int Id { get; private set; }
+
+    public int WorkerId { get; private set; }
+
+    public string Status { get; private set; } = string.Empty;
+
+    public DateTime DateDelivery { get; private set; }
+
+    public IEnumerable<DeliveryProduct> DeliveryProducts { get; private set; } = [];
+
+    public static Delivery CreateOperation(int id, int  workerId, string status, IEnumerable<DeliveryProduct> deliveryProducts)
+    {
+        return new Delivery
+        {
+            Id = id,
+            WorkerId = workerId,
+            Status = status,
+            DateDelivery = DateTime.Now,
+            DeliveryProducts = deliveryProducts
+        };
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Entities/DeliveryProduct.cs b/FurnitureCompany/FurnitureCompany/Entities/DeliveryProduct.cs
new file mode 100644
index 0000000..eb07acf
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Entities/DeliveryProduct.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Entities;
+
+public class DeliveryProduct
+{
+    public int Id { get; private set; }
+
+    public int ProductId { get; private set; }
+
+    public int DeliveryId { get; private set; }
+
+    public int Count { get; private set; }
+
+    public static DeliveryProduct CreateElement(int id, int productId, int deliveryId, int count)
+    {
+        return new DeliveryProduct
+        {
+            Id = id,
+            ProductId = productId,
+            DeliveryId = deliveryId,
+            Count = count
+        };
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Entities/Enums/Material.cs b/FurnitureCompany/FurnitureCompany/Entities/Enums/Material.cs
new file mode 100644
index 0000000..87703c6
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Entities/Enums/Material.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Entities.Enums;
+
+[Flags]
+public enum Material
+{
+    None = 0,
+
+    Wood = 1,
+
+    Stone = 2,
+
+    Glass = 4,
+
+    Metal = 8
+}
diff --git a/FurnitureCompany/FurnitureCompany/Entities/Enums/WorkerPost.cs b/FurnitureCompany/FurnitureCompany/Entities/Enums/WorkerPost.cs
new file mode 100644
index 0000000..e183877
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Entities/Enums/WorkerPost.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Entities.Enums;
+
+public enum WorkerPost
+{
+    None = 0,
+
+    Beginner = 1,
+
+    Advanced = 2,
+
+    Professional = 3
+}
diff --git a/FurnitureCompany/FurnitureCompany/Entities/Invoice.cs b/FurnitureCompany/FurnitureCompany/Entities/Invoice.cs
new file mode 100644
index 0000000..a5cf261
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Entities/Invoice.cs
@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Entities;
+
+public class Invoice
+{
+    public int Id { get; private set; }
+
+    public int WorkerId { get; private set; }
+
+    public int ClientId { get; private set; }
+
+    public int ProductId { get; private set; }
+
+    public DateTime Date { get; private set; }
+
+    public int CountProduct { get; private set; }
+
+    public static Invoice CreateOperation(int id, int workerId, int clientId, int productId, int countProduct)
+    {
+        return new Invoice
+        {
+            Id = id,
+            WorkerId = workerId,
+            ClientId = clientId,
+            ProductId = productId,
+            Date = DateTime.Now,
+            CountProduct = countProduct
+        };
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Entities/Product.cs b/FurnitureCompany/FurnitureCompany/Entities/Product.cs
new file mode 100644
index 0000000..32e8e6c
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Entities/Product.cs
@@ -0,0 +1,30 @@
+using FurnitureCompany.Entities.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Entities;
+
+public class Product
+{
+    public int Id { get; private set; }
+
+    public string Name { get; private set; } = string.Empty;
+
+    public Material Material { get; private set; }
+
+    public double Price { get; private set; }
+
+    public static Product CreateEntity(int id, Material material, string name, double price)
+    {
+        return new Product
+        {
+            Id = id,
+            Material = material,
+            Name = name ?? string.Empty,
+            Price = price
+        };
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Entities/Worker.cs b/FurnitureCompany/FurnitureCompany/Entities/Worker.cs
new file mode 100644
index 0000000..31eb241
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Entities/Worker.cs
@@ -0,0 +1,30 @@
+using FurnitureCompany.Entities.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Entities;
+
+public class Worker
+{
+    public int Id { get; private set; }
+
+    public string Surname { get; private set; } = string.Empty;
+
+    public int Expirience { get; private set; }
+
+    public WorkerPost WorkerPost { get; private set; }
+
+    public static Worker CreateEntity(int id, string surname, int expirience, WorkerPost workerPost)
+    {
+        return new Worker
+        {
+            Id = id,
+            Surname = surname ?? string.Empty,
+            Expirience = expirience,
+            WorkerPost = workerPost
+        };
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Form1.Designer.cs b/FurnitureCompany/FurnitureCompany/Form1.Designer.cs
deleted file mode 100644
index 58f533a..0000000
--- a/FurnitureCompany/FurnitureCompany/Form1.Designer.cs
+++ /dev/null
@@ -1,39 +0,0 @@
-namespace FurnitureCompany
-{
-    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
-    }
-}
diff --git a/FurnitureCompany/FurnitureCompany/FormFurnitureCompany.Designer.cs b/FurnitureCompany/FurnitureCompany/FormFurnitureCompany.Designer.cs
new file mode 100644
index 0000000..6e1e6b6
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/FormFurnitureCompany.Designer.cs
@@ -0,0 +1,133 @@
+namespace FurnitureCompany
+{
+    partial class FormFurnitureCompany
+    {
+        /// <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()
+        {
+            menuStrip1 = new MenuStrip();
+            справочникиToolStripMenuItem = new ToolStripMenuItem();
+            работникиToolStripMenuItem = new ToolStripMenuItem();
+            клиентыToolStripMenuItem = new ToolStripMenuItem();
+            изделияToolStripMenuItem = new ToolStripMenuItem();
+            операцииToolStripMenuItem = new ToolStripMenuItem();
+            оформлениеЗаказаToolStripMenuItem = new ToolStripMenuItem();
+            доставкаToolStripMenuItem = new ToolStripMenuItem();
+            отчётыToolStripMenuItem = new ToolStripMenuItem();
+            menuStrip1.SuspendLayout();
+            SuspendLayout();
+            // 
+            // menuStrip1
+            // 
+            menuStrip1.ImageScalingSize = new Size(20, 20);
+            menuStrip1.Items.AddRange(new ToolStripItem[] { справочникиToolStripMenuItem, операцииToolStripMenuItem, отчётыToolStripMenuItem });
+            menuStrip1.Location = new Point(0, 0);
+            menuStrip1.Name = "menuStrip1";
+            menuStrip1.Size = new Size(782, 28);
+            menuStrip1.TabIndex = 0;
+            menuStrip1.Text = "menuStrip1";
+            // 
+            // справочникиToolStripMenuItem
+            // 
+            справочникиToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { работникиToolStripMenuItem, клиентыToolStripMenuItem, изделияToolStripMenuItem });
+            справочникиToolStripMenuItem.Name = "справочникиToolStripMenuItem";
+            справочникиToolStripMenuItem.Size = new Size(117, 24);
+            справочникиToolStripMenuItem.Text = "Справочники";
+            // 
+            // работникиToolStripMenuItem
+            // 
+            работникиToolStripMenuItem.Name = "работникиToolStripMenuItem";
+            работникиToolStripMenuItem.Size = new Size(166, 26);
+            работникиToolStripMenuItem.Text = "Работники";
+            // 
+            // клиентыToolStripMenuItem
+            // 
+            клиентыToolStripMenuItem.Name = "клиентыToolStripMenuItem";
+            клиентыToolStripMenuItem.Size = new Size(166, 26);
+            клиентыToolStripMenuItem.Text = "Клиенты";
+            // 
+            // изделияToolStripMenuItem
+            // 
+            изделияToolStripMenuItem.Name = "изделияToolStripMenuItem";
+            изделияToolStripMenuItem.Size = new Size(166, 26);
+            изделияToolStripMenuItem.Text = "Изделия";
+            // 
+            // операцииToolStripMenuItem
+            // 
+            операцииToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { оформлениеЗаказаToolStripMenuItem, доставкаToolStripMenuItem });
+            операцииToolStripMenuItem.Name = "операцииToolStripMenuItem";
+            операцииToolStripMenuItem.Size = new Size(95, 24);
+            операцииToolStripMenuItem.Text = "Операции";
+            // 
+            // оформлениеЗаказаToolStripMenuItem
+            // 
+            оформлениеЗаказаToolStripMenuItem.Name = "оформлениеЗаказаToolStripMenuItem";
+            оформлениеЗаказаToolStripMenuItem.Size = new Size(233, 26);
+            оформлениеЗаказаToolStripMenuItem.Text = "Оформление заказа";
+            // 
+            // доставкаToolStripMenuItem
+            // 
+            доставкаToolStripMenuItem.Name = "доставкаToolStripMenuItem";
+            доставкаToolStripMenuItem.Size = new Size(233, 26);
+            доставкаToolStripMenuItem.Text = "Доставка";
+            // 
+            // отчётыToolStripMenuItem
+            // 
+            отчётыToolStripMenuItem.Name = "отчётыToolStripMenuItem";
+            отчётыToolStripMenuItem.Size = new Size(73, 24);
+            отчётыToolStripMenuItem.Text = "Отчёты";
+            // 
+            // FormFurnitureCompany
+            // 
+            AutoScaleDimensions = new SizeF(8F, 20F);
+            AutoScaleMode = AutoScaleMode.Font;
+            BackgroundImage = Properties.Resources._57435d62a4b6bbc87520597c0e8c4c3a;
+            BackgroundImageLayout = ImageLayout.Stretch;
+            ClientSize = new Size(782, 403);
+            Controls.Add(menuStrip1);
+            MainMenuStrip = menuStrip1;
+            Name = "FormFurnitureCompany";
+            StartPosition = FormStartPosition.CenterScreen;
+            Text = "Мебельная компания";
+            menuStrip1.ResumeLayout(false);
+            menuStrip1.PerformLayout();
+            ResumeLayout(false);
+            PerformLayout();
+        }
+
+        #endregion
+
+        private MenuStrip menuStrip1;
+        private ToolStripMenuItem справочникиToolStripMenuItem;
+        private ToolStripMenuItem работникиToolStripMenuItem;
+        private ToolStripMenuItem клиентыToolStripMenuItem;
+        private ToolStripMenuItem изделияToolStripMenuItem;
+        private ToolStripMenuItem операцииToolStripMenuItem;
+        private ToolStripMenuItem отчётыToolStripMenuItem;
+        private ToolStripMenuItem оформлениеЗаказаToolStripMenuItem;
+        private ToolStripMenuItem доставкаToolStripMenuItem;
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Form1.cs b/FurnitureCompany/FurnitureCompany/FormFurnitureCompany.cs
similarity index 51%
rename from FurnitureCompany/FurnitureCompany/Form1.cs
rename to FurnitureCompany/FurnitureCompany/FormFurnitureCompany.cs
index 223c63b..8abe90b 100644
--- a/FurnitureCompany/FurnitureCompany/Form1.cs
+++ b/FurnitureCompany/FurnitureCompany/FormFurnitureCompany.cs
@@ -1,10 +1,11 @@
 namespace FurnitureCompany
 {
-    public partial class Form1 : Form
+    public partial class FormFurnitureCompany : Form
     {
-        public Form1()
+        public FormFurnitureCompany()
         {
             InitializeComponent();
         }
+
     }
 }
diff --git a/FurnitureCompany/FurnitureCompany/FormFurnitureCompany.resx b/FurnitureCompany/FurnitureCompany/FormFurnitureCompany.resx
new file mode 100644
index 0000000..b48baf1
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/FormFurnitureCompany.resx
@@ -0,0 +1,123 @@
+<?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>
+  <metadata name="menuStrip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+</root>
\ No newline at end of file
diff --git a/FurnitureCompany/FurnitureCompany/Forms/FormClient.Designer.cs b/FurnitureCompany/FurnitureCompany/Forms/FormClient.Designer.cs
new file mode 100644
index 0000000..9696902
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Forms/FormClient.Designer.cs
@@ -0,0 +1,172 @@
+namespace FurnitureCompany.Forms
+{
+    partial class FormClient
+    {
+        /// <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()
+        {
+            labelClientName = new Label();
+            labelClientAddress = new Label();
+            labelClientAge = new Label();
+            textBoxClientName = new TextBox();
+            textBoxClientAddress = new TextBox();
+            labelClientEarnings = new Label();
+            numericUpDownClientEarnings = new NumericUpDown();
+            buttonSave = new Button();
+            buttonCancel = new Button();
+            numericUpDownClientAge = new NumericUpDown();
+            ((System.ComponentModel.ISupportInitialize)numericUpDownClientEarnings).BeginInit();
+            ((System.ComponentModel.ISupportInitialize)numericUpDownClientAge).BeginInit();
+            SuspendLayout();
+            // 
+            // labelClientName
+            // 
+            labelClientName.AutoSize = true;
+            labelClientName.Location = new Point(46, 34);
+            labelClientName.Name = "labelClientName";
+            labelClientName.Size = new Size(101, 20);
+            labelClientName.TabIndex = 0;
+            labelClientName.Text = "Имя клиента:";
+            // 
+            // labelClientAddress
+            // 
+            labelClientAddress.AutoSize = true;
+            labelClientAddress.Location = new Point(46, 95);
+            labelClientAddress.Name = "labelClientAddress";
+            labelClientAddress.Size = new Size(147, 20);
+            labelClientAddress.TabIndex = 1;
+            labelClientAddress.Text = "Адрес проживания:";
+            // 
+            // labelClientAge
+            // 
+            labelClientAge.AutoSize = true;
+            labelClientAge.Location = new Point(46, 160);
+            labelClientAge.Name = "labelClientAge";
+            labelClientAge.Size = new Size(67, 20);
+            labelClientAge.TabIndex = 2;
+            labelClientAge.Text = "Возраст:";
+            // 
+            // textBoxClientName
+            // 
+            textBoxClientName.Location = new Point(212, 31);
+            textBoxClientName.Name = "textBoxClientName";
+            textBoxClientName.Size = new Size(192, 27);
+            textBoxClientName.TabIndex = 3;
+            // 
+            // textBoxClientAddress
+            // 
+            textBoxClientAddress.Location = new Point(212, 92);
+            textBoxClientAddress.Name = "textBoxClientAddress";
+            textBoxClientAddress.Size = new Size(192, 27);
+            textBoxClientAddress.TabIndex = 4;
+            // 
+            // labelClientEarnings
+            // 
+            labelClientEarnings.AutoSize = true;
+            labelClientEarnings.Location = new Point(46, 223);
+            labelClientEarnings.Name = "labelClientEarnings";
+            labelClientEarnings.Size = new Size(71, 20);
+            labelClientEarnings.TabIndex = 6;
+            labelClientEarnings.Text = "Выручка:";
+            // 
+            // numericUpDownClientEarnings
+            // 
+            numericUpDownClientEarnings.DecimalPlaces = 2;
+            numericUpDownClientEarnings.Location = new Point(212, 221);
+            numericUpDownClientEarnings.Maximum = new decimal(new int[] { 10000, 0, 0, 0 });
+            numericUpDownClientEarnings.Minimum = new decimal(new int[] { 1, 0, 0, 131072 });
+            numericUpDownClientEarnings.Name = "numericUpDownClientEarnings";
+            numericUpDownClientEarnings.Size = new Size(150, 27);
+            numericUpDownClientEarnings.TabIndex = 7;
+            numericUpDownClientEarnings.Value = new decimal(new int[] { 1, 0, 0, 131072 });
+            // 
+            // buttonSave
+            // 
+            buttonSave.Location = new Point(99, 300);
+            buttonSave.Name = "buttonSave";
+            buttonSave.Size = new Size(94, 29);
+            buttonSave.TabIndex = 8;
+            buttonSave.Text = "Сохранить";
+            buttonSave.UseVisualStyleBackColor = true;
+            buttonSave.Click += buttonSave_Click;
+            // 
+            // buttonCancel
+            // 
+            buttonCancel.Location = new Point(268, 300);
+            buttonCancel.Name = "buttonCancel";
+            buttonCancel.Size = new Size(94, 29);
+            buttonCancel.TabIndex = 9;
+            buttonCancel.Text = "Отмена";
+            buttonCancel.UseVisualStyleBackColor = true;
+            buttonCancel.Click += buttonCancel_Click;
+            // 
+            // numericUpDownClientAge
+            // 
+            numericUpDownClientAge.Location = new Point(212, 158);
+            numericUpDownClientAge.Minimum = new decimal(new int[] { 1, 0, 0, 0 });
+            numericUpDownClientAge.Name = "numericUpDownClientAge";
+            numericUpDownClientAge.Size = new Size(150, 27);
+            numericUpDownClientAge.TabIndex = 10;
+            numericUpDownClientAge.Value = new decimal(new int[] { 1, 0, 0, 0 });
+            // 
+            // FormClient
+            // 
+            AutoScaleDimensions = new SizeF(8F, 20F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(450, 365);
+            Controls.Add(numericUpDownClientAge);
+            Controls.Add(buttonCancel);
+            Controls.Add(buttonSave);
+            Controls.Add(numericUpDownClientEarnings);
+            Controls.Add(labelClientEarnings);
+            Controls.Add(textBoxClientAddress);
+            Controls.Add(textBoxClientName);
+            Controls.Add(labelClientAge);
+            Controls.Add(labelClientAddress);
+            Controls.Add(labelClientName);
+            Name = "FormClient";
+            StartPosition = FormStartPosition.CenterParent;
+            Text = "Клиент";
+            ((System.ComponentModel.ISupportInitialize)numericUpDownClientEarnings).EndInit();
+            ((System.ComponentModel.ISupportInitialize)numericUpDownClientAge).EndInit();
+            ResumeLayout(false);
+            PerformLayout();
+        }
+
+        #endregion
+
+        private Label labelClientName;
+        private Label labelClientAddress;
+        private Label labelClientAge;
+        private TextBox textBoxClientName;
+        private TextBox textBoxClientAddress;
+        private Label labelClientEarnings;
+        private NumericUpDown numericUpDownClientEarnings;
+        private Button buttonSave;
+        private Button buttonCancel;
+        private NumericUpDown numericUpDownClientAge;
+    }
+}
\ No newline at end of file
diff --git a/FurnitureCompany/FurnitureCompany/Forms/FormClient.cs b/FurnitureCompany/FurnitureCompany/Forms/FormClient.cs
new file mode 100644
index 0000000..b425517
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Forms/FormClient.cs
@@ -0,0 +1,88 @@
+using FurnitureCompany.Entities;
+using FurnitureCompany.Repositories;
+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 FurnitureCompany.Forms
+{
+    public partial class FormClient : Form
+    {
+        private readonly IClientRepository _clientRepository;
+
+        private int? _clientId;
+
+        public int Id
+        {
+            set
+            {
+                try
+                {
+                    var client = _clientRepository.ReadClientById(value);
+                    if (client == null)
+                    {
+                        throw new InvalidDataException(nameof(client));
+                    }
+
+                    textBoxClientName.Text = client.Name;
+                    textBoxClientAddress.Text = client.Address;
+                    numericUpDownClientAge.Value = client.Age;
+                    numericUpDownClientEarnings.Value = (decimal)client.Earnings;
+                    _clientId = value;
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка при получении данных", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    return;
+                }
+            }
+        }
+
+        public FormClient(IClientRepository clientRepository)
+        {
+            InitializeComponent();
+            _clientRepository = clientRepository ??
+                throw new ArgumentNullException(nameof(clientRepository));
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                if (string.IsNullOrWhiteSpace(textBoxClientName.Text) ||
+                    string.IsNullOrWhiteSpace(textBoxClientAddress.Text))
+                {
+                    throw new Exception("Имеются незаполненные поля");
+                }
+
+                if(_clientId.HasValue)
+                {
+                    _clientRepository.UpdateClient(CreateClient(_clientId.Value));
+                }
+                else
+                {
+                    _clientRepository.CreateClient(CreateClient(0));
+                }
+
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка при сохранении", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e) => Close();
+
+        private Client CreateClient(int id) => Client.CreateEntity(id,
+            textBoxClientName.Text, textBoxClientAddress.Text,
+            Convert.ToInt32(numericUpDownClientAge.Value),
+            Convert.ToDouble(numericUpDownClientEarnings.Value));
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Form1.resx b/FurnitureCompany/FurnitureCompany/Forms/FormClient.resx
similarity index 92%
rename from FurnitureCompany/FurnitureCompany/Form1.resx
rename to FurnitureCompany/FurnitureCompany/Forms/FormClient.resx
index 1af7de1..8b2ff64 100644
--- a/FurnitureCompany/FurnitureCompany/Form1.resx
+++ b/FurnitureCompany/FurnitureCompany/Forms/FormClient.resx
@@ -1,17 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
-  <!-- 
-    Microsoft ResX Schema 
-    
+  <!--
+    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 
+
+    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>
@@ -26,36 +26,36 @@
         <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 
+
+    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 
+
+    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 
+
+    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 
+
+    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 
+    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 
+    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 
+    value   : The object must be serialized into a byte array
             : using a System.ComponentModel.TypeConverter
             : and then encoded with base64 encoding.
     -->
diff --git a/FurnitureCompany/FurnitureCompany/FurnitureCompany.csproj b/FurnitureCompany/FurnitureCompany/FurnitureCompany.csproj
index 663fdb8..accbdf0 100644
--- a/FurnitureCompany/FurnitureCompany/FurnitureCompany.csproj
+++ b/FurnitureCompany/FurnitureCompany/FurnitureCompany.csproj
@@ -8,4 +8,23 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Unity" Version="5.11.10" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Update="Properties\Resources.Designer.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Update="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+  </ItemGroup>
+
 </Project>
\ No newline at end of file
diff --git a/FurnitureCompany/FurnitureCompany/Program.cs b/FurnitureCompany/FurnitureCompany/Program.cs
index c460ded..8783116 100644
--- a/FurnitureCompany/FurnitureCompany/Program.cs
+++ b/FurnitureCompany/FurnitureCompany/Program.cs
@@ -1,3 +1,7 @@
+using FurnitureCompany.Repositories;
+using FurnitureCompany.Repositories.Implementations;
+using Unity;
+
 namespace FurnitureCompany
 {
     internal static class Program
@@ -11,7 +15,20 @@ namespace FurnitureCompany
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
             ApplicationConfiguration.Initialize();
-            Application.Run(new Form1());
+            Application.Run(CreateContainer().Resolve<FormFurnitureCompany>());
+        }
+
+        private static IUnityContainer CreateContainer()
+        {
+            var container = new UnityContainer();
+
+            container.RegisterType<IClientRepository, ClientRepository>();
+            container.RegisterType<IWorkerRepository, WorkerRepository>();
+            container.RegisterType<IProductRepository, ProductRepository>();
+            container.RegisterType<IInvoiceRepository, InvoiceRepository>();
+            container.RegisterType<IDeliveryRepository, DeliveryRepository>();
+
+            return container;
         }
     }
 }
\ No newline at end of file
diff --git a/FurnitureCompany/FurnitureCompany/Properties/Resources.Designer.cs b/FurnitureCompany/FurnitureCompany/Properties/Resources.Designer.cs
new file mode 100644
index 0000000..b4aa89b
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Properties/Resources.Designer.cs
@@ -0,0 +1,73 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     Этот код создан программой.
+//     Исполняемая версия:4.0.30319.42000
+//
+//     Изменения в этом файле могут привести к неправильной работе и будут потеряны в случае
+//     повторной генерации кода.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace FurnitureCompany.Properties {
+    using System;
+    
+    
+    /// <summary>
+    ///   Класс ресурса со строгой типизацией для поиска локализованных строк и т.д.
+    /// </summary>
+    // Этот класс создан автоматически классом StronglyTypedResourceBuilder
+    // с помощью такого средства, как ResGen или Visual Studio.
+    // Чтобы добавить или удалить член, измените файл .ResX и снова запустите ResGen
+    // с параметром /str или перестройте свой проект VS.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "17.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources() {
+        }
+        
+        /// <summary>
+        ///   Возвращает кэшированный экземпляр ResourceManager, использованный этим классом.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.ReferenceEquals(resourceMan, null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("FurnitureCompany.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Перезаписывает свойство CurrentUICulture текущего потока для всех
+        ///   обращений к ресурсу с помощью этого класса ресурса со строгой типизацией.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+        
+        /// <summary>
+        ///   Поиск локализованного ресурса типа System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap _57435d62a4b6bbc87520597c0e8c4c3a {
+            get {
+                object obj = ResourceManager.GetObject("57435d62a4b6bbc87520597c0e8c4c3a", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Properties/Resources.resx b/FurnitureCompany/FurnitureCompany/Properties/Resources.resx
new file mode 100644
index 0000000..6515da1
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Properties/Resources.resx
@@ -0,0 +1,124 @@
+<?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>
+  <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
+  <data name="57435d62a4b6bbc87520597c0e8c4c3a" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\57435d62a4b6bbc87520597c0e8c4c3a.jpg;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+</root>
\ No newline at end of file
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/IClientRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/IClientRepository.cs
new file mode 100644
index 0000000..4feefa0
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/IClientRepository.cs
@@ -0,0 +1,21 @@
+using FurnitureCompany.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories;
+
+public interface IClientRepository
+{
+    IEnumerable<Client> GetClients();
+
+    Client ReadClientById(int id);
+
+    void CreateClient(Client client);
+
+    void UpdateClient(Client client);
+
+    void DeleteClient(int id);
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/IDeliveryRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/IDeliveryRepository.cs
new file mode 100644
index 0000000..4d4aa4c
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/IDeliveryRepository.cs
@@ -0,0 +1,18 @@
+using FurnitureCompany.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories;
+
+public interface IDeliveryRepository
+{
+    IEnumerable<Delivery> ReadDeliverys(DateTime? dateFrom = null, DateTime? dateTo = null, int? productId = null,
+        int? workerId = null);
+
+    void CreateDelivery(Delivery delivery);
+
+    void DeleteDelivery(Delivery delivery);
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/IInvoiceRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/IInvoiceRepository.cs
new file mode 100644
index 0000000..892c882
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/IInvoiceRepository.cs
@@ -0,0 +1,16 @@
+using FurnitureCompany.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories;
+
+public interface IInvoiceRepository
+{
+    IEnumerable<Invoice> ReadInvoices(DateTime? dateFrom = null, DateTime? dateTo = null, int? productId = null,
+        int? workerId = null, int? clientId = null);
+
+    void CreateInvoice(Invoice invoice);
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/IProductRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/IProductRepository.cs
new file mode 100644
index 0000000..492a68c
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/IProductRepository.cs
@@ -0,0 +1,21 @@
+using FurnitureCompany.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories;
+
+public interface IProductRepository
+{
+    IEnumerable<Product> ReadProducts();
+
+    Product ReadProductById(int id);
+
+    void CreateProduct(Product product);
+
+    void UpdateProduct(Product product);
+
+    void DeleteProduct(int id);
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/IWorkerRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/IWorkerRepository.cs
new file mode 100644
index 0000000..aa8f8ec
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/IWorkerRepository.cs
@@ -0,0 +1,21 @@
+using FurnitureCompany.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories;
+
+public interface IWorkerRepository
+{
+    IEnumerable<Worker> ReadWorkers();
+
+    Worker ReadWorkerById(int id);
+
+    void CreateWorker(Worker worker);
+
+    void UpdateWorker(Worker worker);
+
+    void DeleteWorker(int id);
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/Implementations/ClientRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/ClientRepository.cs
new file mode 100644
index 0000000..129c665
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/ClientRepository.cs
@@ -0,0 +1,33 @@
+using FurnitureCompany.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories.Implementations;
+
+public class ClientRepository : IClientRepository
+{
+    public void CreateClient(Client client)
+    {
+    }
+
+    public void DeleteClient(int id)
+    {
+    }
+
+    public IEnumerable<Client> GetClients()
+    {
+        return[];
+    }
+
+    public Client ReadClientById(int id)
+    {
+        return Client.CreateEntity(0, string.Empty, string.Empty, 0, 0);
+    }
+
+    public void UpdateClient(Client client)
+    {
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/Implementations/DeliveryRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/DeliveryRepository.cs
new file mode 100644
index 0000000..3a7581b
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/DeliveryRepository.cs
@@ -0,0 +1,24 @@
+using FurnitureCompany.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories.Implementations;
+
+public class DeliveryRepository : IDeliveryRepository
+{
+    public void CreateDelivery(Delivery delivery)
+    {
+    }
+
+    public void DeleteDelivery(Delivery delivery)
+    {
+    }
+
+    public IEnumerable<Delivery> ReadDeliverys(DateTime? dateFrom = null, DateTime? dateTo = null, int? productId = null, int? workerId = null)
+    {
+        return [];
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/Implementations/InvoiceRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/InvoiceRepository.cs
new file mode 100644
index 0000000..f1e0372
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/InvoiceRepository.cs
@@ -0,0 +1,20 @@
+using FurnitureCompany.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories.Implementations;
+
+public class InvoiceRepository : IInvoiceRepository
+{
+    public void CreateInvoice(Invoice invoice)
+    {
+    }
+
+    public IEnumerable<Invoice> ReadInvoices(DateTime? dateFrom = null, DateTime? dateTo = null, int? productId = null, int? workerId = null, int? clientId = null)
+    {
+        return [];
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/Implementations/ProductRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/ProductRepository.cs
new file mode 100644
index 0000000..4322cc4
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/ProductRepository.cs
@@ -0,0 +1,34 @@
+using FurnitureCompany.Entities;
+using FurnitureCompany.Entities.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories.Implementations;
+
+public class ProductRepository : IProductRepository
+{
+    public void CreateProduct(Product product)
+    {
+    }
+
+    public void DeleteProduct(int id)
+    {
+    }
+
+    public Product ReadProductById(int id)
+    {
+        return Product.CreateEntity(0, Material.None, string.Empty, 0);
+    }
+
+    public IEnumerable<Product> ReadProducts()
+    {
+        return [];
+    }
+
+    public void UpdateProduct(Product product)
+    {
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Repositories/Implementations/WorkerRepository.cs b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/WorkerRepository.cs
new file mode 100644
index 0000000..93c4094
--- /dev/null
+++ b/FurnitureCompany/FurnitureCompany/Repositories/Implementations/WorkerRepository.cs
@@ -0,0 +1,34 @@
+using FurnitureCompany.Entities;
+using FurnitureCompany.Entities.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FurnitureCompany.Repositories.Implementations;
+
+public class WorkerRepository : IWorkerRepository
+{
+    public void CreateWorker(Worker worker)
+    {
+    }
+
+    public void DeleteWorker(int id)
+    {
+    }
+
+    public Worker ReadWorkerById(int id)
+    {
+        return Worker.CreateEntity(0, string.Empty, 0, WorkerPost.None);
+    }
+
+    public IEnumerable<Worker> ReadWorkers()
+    {
+        return [];
+    }
+
+    public void UpdateWorker(Worker worker)
+    {
+    }
+}
diff --git a/FurnitureCompany/FurnitureCompany/Resources/57435d62a4b6bbc87520597c0e8c4c3a.jpg b/FurnitureCompany/FurnitureCompany/Resources/57435d62a4b6bbc87520597c0e8c4c3a.jpg
new file mode 100644
index 0000000..1cbc179
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