private void deleteSelectedBarcode_Click(object sender, RoutedEventArgs e)
        {
            List <ListViewItems> it = listView.SelectedItems.Cast <ListViewItems>().ToList();

            MessageBoxResult res = Xceed.Wpf.Toolkit.MessageBox.Show("Are you sure?. Press 'Yes' to Confirm.", "Confirmation", MessageBoxButton.YesNo, MessageBoxImage.Error, MessageBoxResult.No);

            if (res != MessageBoxResult.Yes)
            {
                return;
            }

            foreach (ListViewItems item in it)
            {
                try
                {
                    listView.Items.Remove(item);
                    if (ProductTableData.delete1Barcode(item.IMEI, product.ID) == true)
                    {
                        Xceed.Wpf.Toolkit.MessageBox.Show("Barcode deleted successfully. Press ok to exit.", "Exit");
                    }
                }
                catch (Exception ex)
                {
                    Xceed.Wpf.Toolkit.MessageBox.Show(ex.Message, "Error");
                }
            }


            sort();
        }