private void cmdSave_Click(object sender, EventArgs e) { int orderId; int productId; int.TryParse(this.Request["orderid"], out orderId); int.TryParse(this.Request["productid"], out productId); OrderDetail orderDetail = OrderDetail.SelectUsingPK(orderId, productId); //orderDetail.ProductId = int.Parse(cboProduct.SelectedValue ); orderDetail.Discount = float.Parse(txtDiscount.Text); orderDetail.UnitPrice = decimal.Parse(txtPrice.Text); orderDetail.Quantity = short.Parse(txtQuantity.Text); orderDetail.Persist(); this.Response.Redirect(SessionHelper.LastOrderListSearch); }