Xceed.Wpf.Toolkit.DateTimePicker.OnPreviewKeyDown C# (CSharp) 메소드

    protected override void OnPreviewKeyDown( KeyEventArgs e )
    {
      //if the calendar is open then we don't want to modify the behavior of navigating the calendar control with the Up/Down keys.
      if( !IsOpen )
        base.OnPreviewKeyDown( e );
    }