Исправлял формы, а то не работало :(

PrecastConcretePlant/PrecastConcretePlant/FormSellReinforced.Designer.cs

@@ -31,49 +31,45 @@
             this.ReinforcedLabel = new System.Windows.Forms.Label();
             this.QuantityLabel = new System.Windows.Forms.Label();
             this.ReindorcedСomboBox = new System.Windows.Forms.ComboBox();
-            this.QuantityTextBox = new System.Windows.Forms.TextBox();
             this.SaveButton = new System.Windows.Forms.Button();
             this.ButtonCancel = new System.Windows.Forms.Button();
+            this.numericUpDownCount = new System.Windows.Forms.NumericUpDown();
+            ((System.ComponentModel.ISupportInitialize)(this.numericUpDownCount)).BeginInit();
             this.SuspendLayout();
             // 
             // ReinforcedLabel
             // 
             this.ReinforcedLabel.AutoSize = true;
-            this.ReinforcedLabel.Location = new System.Drawing.Point(12, 18);
+            this.ReinforcedLabel.Location = new System.Drawing.Point(14, 24);
             this.ReinforcedLabel.Name = "ReinforcedLabel";
-            this.ReinforcedLabel.Size = new System.Drawing.Size(56, 15);
+            this.ReinforcedLabel.Size = new System.Drawing.Size(71, 20);
             this.ReinforcedLabel.TabIndex = 0;
             this.ReinforcedLabel.Text = "Изделие:";
             // 
             // QuantityLabel
             // 
             this.QuantityLabel.AutoSize = true;
-            this.QuantityLabel.Location = new System.Drawing.Point(12, 51);
+            this.QuantityLabel.Location = new System.Drawing.Point(14, 68);
             this.QuantityLabel.Name = "QuantityLabel";
-            this.QuantityLabel.Size = new System.Drawing.Size(75, 15);
+            this.QuantityLabel.Size = new System.Drawing.Size(93, 20);
             this.QuantityLabel.TabIndex = 1;
             this.QuantityLabel.Text = "Количество:";
             // 
             // ReindorcedСomboBox
             // 
             this.ReindorcedСomboBox.FormattingEnabled = true;
-            this.ReindorcedСomboBox.Location = new System.Drawing.Point(88, 15);
+            this.ReindorcedСomboBox.Location = new System.Drawing.Point(101, 20);
+            this.ReindorcedСomboBox.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
             this.ReindorcedСomboBox.Name = "ReindorcedСomboBox";
-            this.ReindorcedСomboBox.Size = new System.Drawing.Size(184, 23);
+            this.ReindorcedСomboBox.Size = new System.Drawing.Size(210, 28);
             this.ReindorcedСomboBox.TabIndex = 2;
             // 
-            // QuantityTextBox
-            // 
-            this.QuantityTextBox.Location = new System.Drawing.Point(88, 48);
-            this.QuantityTextBox.Name = "QuantityTextBox";
-            this.QuantityTextBox.Size = new System.Drawing.Size(184, 23);
-            this.QuantityTextBox.TabIndex = 3;
-            // 
             // SaveButton
             // 
-            this.SaveButton.Location = new System.Drawing.Point(72, 100);
+            this.SaveButton.Location = new System.Drawing.Point(82, 133);
+            this.SaveButton.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
             this.SaveButton.Name = "SaveButton";
-            this.SaveButton.Size = new System.Drawing.Size(97, 29);
+            this.SaveButton.Size = new System.Drawing.Size(111, 39);
             this.SaveButton.TabIndex = 4;
             this.SaveButton.Text = "Сохранить";
             this.SaveButton.UseVisualStyleBackColor = true;
@@ -81,27 +77,37 @@
             // 
             // ButtonCancel
             // 
-            this.ButtonCancel.Location = new System.Drawing.Point(175, 100);
+            this.ButtonCancel.Location = new System.Drawing.Point(200, 133);
+            this.ButtonCancel.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
             this.ButtonCancel.Name = "ButtonCancel";
-            this.ButtonCancel.Size = new System.Drawing.Size(97, 29);
+            this.ButtonCancel.Size = new System.Drawing.Size(111, 39);
             this.ButtonCancel.TabIndex = 5;
             this.ButtonCancel.Text = "Отмена";
             this.ButtonCancel.UseVisualStyleBackColor = true;
             this.ButtonCancel.Click += new System.EventHandler(this.ButtonCancel_Click);
             // 
+            // numericUpDownCount
+            // 
+            this.numericUpDownCount.Location = new System.Drawing.Point(113, 68);
+            this.numericUpDownCount.Name = "numericUpDownCount";
+            this.numericUpDownCount.Size = new System.Drawing.Size(198, 27);
+            this.numericUpDownCount.TabIndex = 7;
+            // 
             // FormSellReinforced
             // 
-            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 20F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(284, 141);
+            this.ClientSize = new System.Drawing.Size(325, 188);
+            this.Controls.Add(this.numericUpDownCount);
             this.Controls.Add(this.ButtonCancel);
             this.Controls.Add(this.SaveButton);
-            this.Controls.Add(this.QuantityTextBox);
             this.Controls.Add(this.ReindorcedСomboBox);
             this.Controls.Add(this.QuantityLabel);
             this.Controls.Add(this.ReinforcedLabel);
+            this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
             this.Name = "FormSellReinforced";
             this.Text = "Продать Изделие";
+            ((System.ComponentModel.ISupportInitialize)(this.numericUpDownCount)).EndInit();
             this.ResumeLayout(false);
             this.PerformLayout();
 
@@ -112,8 +118,8 @@
         private Label ReinforcedLabel;
         private Label QuantityLabel;
         private ComboBox ReindorcedСomboBox;
-        private TextBox QuantityTextBox;
         private Button SaveButton;
         private Button ButtonCancel;
+        private NumericUpDown numericUpDownCount;
     }
 }

PrecastConcretePlant/PrecastConcretePlant/FormSellReinforced.cs

@@ -1,4 +1,5 @@
 using Microsoft.Extensions.Logging;
+using PrecastConcretePlantBusinessLogic.BusinessLogic;
 using PrecastConcretePlantContracts.BusinessLogicsContracts;
 using PrecastConcretePlantContracts.SearchModels;
 
@@ -47,40 +48,42 @@ namespace PrecastConcretePlantView
 
         private void SaveButton_Click(object sender, EventArgs e)
         {
-            if (string.IsNullOrEmpty(QuantityTextBox.Text))
-            {
-                MessageBox.Show("Укажите количество", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
-                return;
-            }
-
             if (ReindorcedСomboBox.SelectedValue == null)
             {
                 MessageBox.Show("Выберите изделие", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                 return;
             }
-
+            if (string.IsNullOrEmpty(numericUpDownCount.Text))
-            _logger.LogInformation("Product sale.");
+            {
-
+                MessageBox.Show("Заполните количество", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            _logger.LogInformation("Продажа изделий");
             try
             {
-                var operationResult = _logicShop.SellReinforced(_logicReinforced.ReadElement(new ReinforcedSearchModel()
+                var reinforced = _logicReinforced.ReadElement(new()
                 {
-                    Id = Convert.ToInt32(ReindorcedСomboBox.SelectedValue)
+                    Id = (int)ReindorcedСomboBox.SelectedValue
-                })!, Convert.ToInt32(QuantityTextBox.Text));
+                });
-
+                if (reinforced == null)
+                {
+                    throw new Exception("Изделие не найдено. Дополнительная информация в логах.");
+                }
+                var operationResult = _logicShop.SellReinforced(
+                    reinforced: reinforced,
+                    quantity: (int)numericUpDownCount.Value
+                );
                 if (!operationResult)
                 {
-                    throw new Exception("Ошибка при продаже изделия. Дополнительная информация в логах.");
+                    throw new Exception("Ошибка при продаже изделий. Дополнительная информация в логах.");
                 }
-
                 MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
                 DialogResult = DialogResult.OK;
-
                 Close();
             }
             catch (Exception ex)
             {
-                _logger.LogError(ex, "Product sale error.");
+                _logger.LogError(ex, "Ошибка сохранения поездки");
                 MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
             }
         }

PrecastConcretePlant/PrecastConcretePlantDatabaseImplement/Implements/ShopStorage.cs

@@ -108,7 +108,7 @@ namespace PrecastConcretePlantDatabaseImplement.Implements
             return null;
         }
 
-        public bool SellReinforcedies(IReinforcedModel model, int count)
+        public bool SellReinforced(IReinforcedModel model, int count)
         {
             using var context = new PrecastConcretePlantDataBase();
             using var transaction = context.Database.BeginTransaction();
@@ -152,9 +152,5 @@ namespace PrecastConcretePlantDatabaseImplement.Implements
             }
         }
 
-        public bool SellReinforced(IReinforcedModel model, int quantity)
-        {
-            throw new NotImplementedException();
-        }
     }
 }