protected void ItemDropDownList_SelectedIndexChanged(object sender, EventArgs e) { if (itemDropDownList.SelectedIndex > 0) { int companyId = Convert.ToInt32(companyDropDownList.SelectedValue); string itemName = itemDropDownList.SelectedItem.ToString(); StockIn stockIn = stockOutManager.GetAvailableStock(companyId, itemName); reorderlevelTextBox.Text = stockIn.ReorderLevel.ToString(); quantityTextBox.Text = stockIn.AvailableQuantity.ToString(); stockOutQantityTextBox.Text = ""; itemLabel.Text = ""; } else { reorderlevelTextBox.Text = ""; quantityTextBox.Text = ""; itemLabel.Text = "Please Select a Item"; itemLabel.ForeColor = Color.Orange; } }