Deleting Selected Items

The following example demonstrates how to delete the selected items and handle the DeletingSelectedItemError and DeletingSelectedItems events.

XAML	Copy Code
<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid"> <Grid.Resources> <xcdg:DataGridCollectionViewSource x:Key="cvs_orders" Source="{Binding Source={x:Static Application.Current}, Path=Orders}" /> </Grid.Resources> <xcdg:DataGridControl x:Name="OrdersGrid" ItemsSource="{Binding Source={StaticResource cvs_orders}}" IsDeleteCommandEnabled="True" DeletingSelectedItemError="OrdersGrid_DeletingSelectedItemError" DeletingSelectedItems="OrdersGrid_DeletingSelectedItems"/> </Grid>

XAML

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<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">
  <Grid.Resources>
     <xcdg:DataGridCollectionViewSource x:Key="cvs_orders"
                                        Source="{Binding Source={x:Static Application.Current}, Path=Orders}" />      
  </Grid.Resources>
   <xcdg:DataGridControl x:Name="OrdersGrid"
                         ItemsSource="{Binding Source={StaticResource cvs_orders}}"
                         IsDeleteCommandEnabled="True"
                         DeletingSelectedItemError="OrdersGrid_DeletingSelectedItemError"
                         DeletingSelectedItems="OrdersGrid_DeletingSelectedItems"/>       
</Grid>

VB.NET	Copy Code
Private Sub OrdersGrid_DeletingSelectedItemError( ByVal sender As Object, ByVal e As DeletingSelectedItemErrorRoutedEventArgs ) Dim result As MessageBoxResult = System.Windows.MessageBox.Show( "The following error occurred while attempting to delete an item: " & _ e.Exception.Message & " Do you want to attempt to continue?", "Error", MessageBoxButton.YesNoCancel ) ' If "No", the item would be skipped. Since "Skip" is the default action, ' there is no need to verify it. If result = MessageBoxResult.Yes Then If Me.OrdersGrid.IsBeingEdited Then Try Me.OrdersGrid.CancelEdit() e.Action = DeletingSelectedItemErrorAction.Retry Catch e.Action = DeletingSelectedItemErrorAction.Skip End Try End If End If If result = MessageBoxResult.Cancel Then e.Action = DeletingSelectedItemErrorAction.Abort End If End Sub Private Sub OrdersGrid_DeletingSelectedItems( ByVal sender As Object, ByVal e As CancelRoutedEventArgs ) Dim result As MessageBoxResult = System.Windows.MessageBox.Show( "Are you certain you want to delete the selected rows?", _ "Confirm Delete", MessageBoxButton.YesNo ) If result = MessageBoxResult.No Then e.Cancel = True End If End Sub

VB.NET

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Private Sub OrdersGrid_DeletingSelectedItemError( ByVal sender As Object, ByVal e As DeletingSelectedItemErrorRoutedEventArgs )
  Dim result As MessageBoxResult = System.Windows.MessageBox.Show( "The following error occurred while attempting to delete an item: " & _
                                            e.Exception.Message & " Do you want to attempt to continue?", "Error", MessageBoxButton.YesNoCancel )
  ' If "No", the item would be skipped. Since "Skip" is the default action,
  ' there is no need to verify it.
  If result = MessageBoxResult.Yes Then
    If Me.OrdersGrid.IsBeingEdited Then
      Try
        Me.OrdersGrid.CancelEdit()
        e.Action = DeletingSelectedItemErrorAction.Retry
      Catch
        e.Action = DeletingSelectedItemErrorAction.Skip
      End Try
    End If
  End If
  If result = MessageBoxResult.Cancel Then
    e.Action = DeletingSelectedItemErrorAction.Abort
  End If
End Sub
Private Sub OrdersGrid_DeletingSelectedItems( ByVal sender As Object, ByVal e As CancelRoutedEventArgs )
  Dim result As MessageBoxResult = System.Windows.MessageBox.Show( "Are you certain you want to delete the selected rows?", _
                                                                 "Confirm Delete", MessageBoxButton.YesNo )
  If result = MessageBoxResult.No Then
    e.Cancel = True
  End If
End Sub

C#	Copy Code
private void OrdersGrid_DeletingSelectedItemError( object sender, DeletingSelectedItemErrorRoutedEventArgs e ) { MessageBoxResult result = System.Windows.MessageBox.Show( "The following error occurred while attempting to delete an item: " + e.Exception.Message + " Do you want to attempt to continue?", "Error", MessageBoxButton.YesNoCancel ); // If "No", the item would be skipped. Since "Skip" is the default action, // there is no need to verify it. if( result == MessageBoxResult.Yes ) { if( this.OrdersGrid.IsBeingEdited ) { try { this.OrdersGrid.CancelEdit(); e.Action = DeletingSelectedItemErrorAction.Retry; } catch { e.Action = DeletingSelectedItemErrorAction.Skip; } } } if( result == MessageBoxResult.Cancel ) { e.Action = DeletingSelectedItemErrorAction.Abort; } } private void OrdersGrid_DeletingSelectedItems( object sender, CancelRoutedEventArgs e ) { MessageBoxResult result = System.Windows.MessageBox.Show( "Are you certain you want to delete the selected rows?", "Confirm Delete", MessageBoxButton.YesNo ); if( result == MessageBoxResult.No ) { e.Cancel = true; } }

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private void OrdersGrid_DeletingSelectedItemError( object sender, DeletingSelectedItemErrorRoutedEventArgs e )
{    
 MessageBoxResult result = System.Windows.MessageBox.Show( "The following error occurred while attempting to delete an item: " +
                                           e.Exception.Message + " Do you want to attempt to continue?", "Error", MessageBoxButton.YesNoCancel );
 // If "No", the item would be skipped. Since "Skip" is the default action,
 // there is no need to verify it.
 if( result == MessageBoxResult.Yes )
 {
   if( this.OrdersGrid.IsBeingEdited )
   {
     try
     {
       this.OrdersGrid.CancelEdit();
       e.Action = DeletingSelectedItemErrorAction.Retry;
     }
     catch
     {
       e.Action = DeletingSelectedItemErrorAction.Skip;
     }        
   }
 }
 if( result == MessageBoxResult.Cancel )
 {
   e.Action = DeletingSelectedItemErrorAction.Abort;
 }
}
private void OrdersGrid_DeletingSelectedItems( object sender, CancelRoutedEventArgs e )
{
 MessageBoxResult result = System.Windows.MessageBox.Show( "Are you certain you want to delete the selected rows?", "Confirm Delete", MessageBoxButton.YesNo );
 if( result == MessageBoxResult.No )
 {
   e.Cancel = true;
 }     
}