private void comboBoxChooseProd_SelectedIndexChanged(object sender, EventArgs e) { prodName = comboBoxChooseProd.Text; com = "SELECT DISTINCT [Size] FROM Product " + "join Warehouse on Product.[Id_ProductKA] = Warehouse.[Id_Product]" + "join ProductType on Product.[Id_ProductType] = ProductType.[Id_ProductTypeKA] " + "join TableProdImg on ProductType.[Id_ProductTypeKA] = TableProdImg.[Id_Type] " + $"WHERE TableProdImg.[Id_Type] = {comboBoxChooseType.SelectedIndex + 1} AND " + $"TableProdImg.[ProductName] = '{comboBoxChooseProd.Text}' AND " + $"Product.[ProductName] = '{comboBoxChooseProd.Text}' AND " + $"Warehouse.[Id_Affiliate] = {affiliateId}"; comboBoxSizeBuy.SelectedIndex = -1; comboBoxSizeBuy.Items.Clear(); textBoxPriceProd.Clear(); richTextBox.Clear(); MyConnection.comboBoxLoading(comboBoxSizeBuy, com, "Size"); com = "SELECT TOP 1 [PriceOfUnit] FROM Product " + "join ProductType on Product.[Id_ProductType] = ProductType.[Id_ProductTypeKA] " + "join TableProdImg on ProductType.[Id_ProductTypeKA] = TableProdImg.[Id_Type] " + $"WHERE TableProdImg.[Id_Type] = {comboBoxChooseType.SelectedIndex + 1} AND " + $"TableProdImg.[ProductName] = '{comboBoxChooseProd.Text}' AND " + $"Product.[ProductName] = '{comboBoxChooseProd.Text}'"; MyConnection.textBoxLoading(textBoxPriceProd, com); com = "SELECT TOP 1 [Descriprion] FROM Product " + "join ProductType on Product.[Id_ProductType] = ProductType.[Id_ProductTypeKA] " + "join TableProdImg on ProductType.[Id_ProductTypeKA] = TableProdImg.[Id_Type] " + $"WHERE TableProdImg.[Id_Type] = {comboBoxChooseType.SelectedIndex + 1} AND " + $"TableProdImg.[ProductName] = '{comboBoxChooseProd.Text}' AND " + $"Product.[ProductName] = '{comboBoxChooseProd.Text}'"; MyConnection.richTextBoxLoading(richTextBox, com); }