не понятно как добавить мануфактуру

Laba3/ManufacturerForm.Designer.cs

@@ -28,12 +28,36 @@
         /// </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 = "ManufacturerForm";
+            dataGridView = new DataGridView();
+            ((System.ComponentModel.ISupportInitialize)dataGridView).BeginInit();
+            SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            dataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            dataGridView.Location = new Point(12, 12);
+            dataGridView.Name = "dataGridView";
+            dataGridView.RowHeadersWidth = 51;
+            dataGridView.Size = new Size(776, 426);
+            dataGridView.TabIndex = 0;
+            dataGridView.CellValueChanged += dataGridView_CellValueChanged;
+            dataGridView.UserAddedRow += dataGridView_UserAddedRow;
+            dataGridView.UserDeletingRow += dataGridView_UserDeletingRow;
+            // 
+            // ManufacturerForm
+            // 
+            AutoScaleDimensions = new SizeF(8F, 20F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(800, 450);
+            Controls.Add(dataGridView);
+            Name = "ManufacturerForm";
+            Text = "ManufacturerForm";
+            ((System.ComponentModel.ISupportInitialize)dataGridView).EndInit();
+            ResumeLayout(false);
         }
 
         #endregion
+
+        private DataGridView dataGridView;
     }
 }

Laba3/ManufacturerForm.resx

@@ -1,17 +1,17 @@
 <?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 
+
+    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.
     -->

Laba3/ProductForm.cs

@@ -31,6 +31,7 @@ namespace Laba3
             _isNewProduct = product == null;
             txtName.MinLength = MINL;
             txtName.MaxLength = MAXL;
+            //TODO dtpDeliveryDate.DateF
 
             if (!_isNewProduct)
             {

Laba3/Program.cs

@@ -1,3 +1,6 @@
+using Data.Repositories;
+using Data;
+
 namespace Laba3
 {
     internal static class Program
@@ -10,8 +13,13 @@ namespace Laba3
         {
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
-            ApplicationConfiguration.Initialize();
-            Application.Run(new MainForm());
+            // Ñîçäàíèå ýêçåìïëÿðîâ ðåïîçèòîðèåâ
+            var dbContext = new ApplicationDbContext();
+            var productRepository = new ProductRepository(dbContext);
+            var manufacturerRepository = new ManufacturerRepository(dbContext);
+
+            // Ïåðåäà÷à ðåïîçèòîðèåâ â êîíñòðóêòîð MainForm
+            Application.Run(new MainForm(productRepository, manufacturerRepository));
         }
     }
 }