protected void saveButton_Click(object sender, EventArgs e) { StockIn stockIn = new StockIn(); stockIn.CompanyId = Convert.ToInt32(companyDropDownList.SelectedValue); stockIn.ItemId = Convert.ToInt32(itemDropDownList.SelectedValue); stockIn.ReorderLevel = Convert.ToInt32(reorderLevelTextBox.Text); stockIn.AvailableQuantity = Convert.ToInt32(stockInQuantityTextBox.Text); stockIn.StockInQuantity = Convert.ToInt32(stockInQuantityTextBox.Text); StockIn aStockIn = stockInManager.GetAvailableAndStockInQuantity(stockIn.ItemId); if (aStockIn != null) { int availableQuantity = aStockIn.AvailableQuantity; int stockInQuantity = aStockIn.StockInQuantity; stockIn.AvailableQuantity = stockIn.AvailableQuantity + availableQuantity; stockIn.StockInQuantity = stockIn.StockInQuantity + stockInQuantity; messageLabel.Text = stockInManager.Update(stockIn); availableQuantityTextBox.Text = stockIn.AvailableQuantity.ToString(); } else { messageLabel.Text = stockInManager.Save(stockIn); availableQuantityTextBox.Text = stockIn.AvailableQuantity.ToString(); } stockInQuantityTextBox.Text = ""; }