private void orderDeleteButton_Click(object sender, RoutedEventArgs e) { BillingOperation order = (BillingOperation)billingDataGrid.SelectedItem; if (order != null) { BillingService billingService = new BillingService(); if (MessageBox.Show("Are you want to Delete ?", "Confirm", MessageBoxButton.YesNo, MessageBoxImage.Question) == MessageBoxResult.Yes) { billingService.DeleteOrder(order.OrderId); } LoadData(); } }