private void ViewDetail_Click(object sender, EventArgs e) { try { if (orderID != -1) { OrderDetail od = new OrderDetail(); od.Show(); order = orderData.GetOrderFromOrderID(orderID); Account account = accountData.GetAccountDetailFromID(order.AccountID); od.txtCashier.Text = account.Username; od.txtDate.Text = order.OrderDate.ToString(); od.txtOrderID.Text = order.OrderID.ToString(); od.txtTotal.Text = order.Total.ToString(); dtOrderDetail = orderDetailData.GetOrderDetail(orderID).Tables[0]; od.dgvOrderDetail.DataSource = dtOrderDetail; } } catch (Exception ex) { MessageBox.Show(ex.Message); } }