New Post: PropertyGrid how to view a Double[,] proptery

<xctk:PropertyGrid.EditorDefinitions>
            <xctk:EditorTemplateDefinition TargetProperties="MyArray">
               <xctk:EditorTemplateDefinition.EditingTemplate>
                  <DataTemplate>
                     <TextBlock Background="Yellow"
                                Text="{Binding Value, Converter={StaticResource ArrayConverter}}" />
                  </DataTemplate>
               </xctk:EditorTemplateDefinition.EditingTemplate>
            </xctk:EditorTemplateDefinition>
</xctk:PropertyGrid.EditorDefinitions>

public class ArrayConverter : IValueConverter
  {
    public object Convert( object value, Type targetType, object parameter, CultureInfo culture )
    {
      string returnString = "";
      var array = value as double[ , ];
      for( int i = 0; i < array.Length / 2; i++)
      {
        returnString +=  "(" + array[i,0] + ", " + array[i,1] + ")";
      }
      return returnString;
    }

    public object ConvertBack( object value, Type targetType, object parameter, CultureInfo culture )
    {
      throw new NotImplementedException();
    }
  }

[Editor( typeof( ArrayEditor ), typeof( ArrayEditor ) )]
    public double[ , ] MyArray
    {
      get;
      set;
    }

public class ArrayEditor : Xceed.Wpf.Toolkit.PropertyGrid.Editors.ITypeEditor
  {
    public FrameworkElement ResolveEditor( Xceed.Wpf.Toolkit.PropertyGrid.PropertyItem propertyItem )
    {
      var array = propertyItem.Value as double[ , ];

      var list = new List<string>();
      for( int i = 0 ; i < array.Length / 2; i++ )
      {
        list.Add( "(" + array[ i, 0 ] + ", " + array[ i, 1 ] + ")" );
      }

      ComboBox comboBox = new ComboBox();
      comboBox.ItemsSource = list;
      comboBox.SelectedIndex = 0;
      return comboBox;
    }
  }