private static void OnItemsSourceChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
        {
            PrimitiveTypeCollectionEditor primitiveTypeCollectionEditor = o as PrimitiveTypeCollectionEditor;

            if (primitiveTypeCollectionEditor != null)
            {
                primitiveTypeCollectionEditor.OnItemsSourceChanged(( IList )e.OldValue, ( IList )e.NewValue);
            }
        }
        private static void OnTextChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
        {
            PrimitiveTypeCollectionEditor primitiveTypeCollectionEditor = o as PrimitiveTypeCollectionEditor;

            if (primitiveTypeCollectionEditor != null)
            {
                primitiveTypeCollectionEditor.OnTextChanged(( string )e.OldValue, ( string )e.NewValue);
            }
        }