/// <summary> /// Clear the value of IsSelected and raise change notification. /// </summary> /// <param name="item">The ModelItem.</param> public static void ClearDesignTimeIsSelected(ModelItem item) { item.ClearDesignerProperty(DesignTimeIsSelectedProperty); // Note: ClearDesignerProperty etc. are extension methods declared on DesignerState Util.InvalidateProperty(item, MyPlatformTypes.TabItem.IsSelectedProperty); }