private void DeliveryPersonEditExecuted(object sender, ExecutedRoutedEventArgs e)
 {
     int id = e.Parameter is int ? (int) e.Parameter : 0;
     var pd = new DeliveryPersonDetail(id, WVM.AllDeliveryPersonList, WVM.AddDeliveryPersonList,
                                       WVM.UpdateDeliveryPersonList, PageMode.AddMode);
     pd.ShowDialog();
     Refresh();
 }
 private void Button2Click(object sender, RoutedEventArgs e)
 {
     var pd = new DeliveryPersonDetail(WVM.AllDeliveryPersonList, WVM.AddDeliveryPersonList, PageMode.AddMode);
     pd.ShowDialog();
     Refresh();
 }