public static void SetFocusingElement(BarItem barItem, UIElement element)
{
barItem.SetValue(FocusingElementProperty, element);
}
public static void SetAction(BarItem barItem, object action)
{
barItem.SetValue(ActionProperty, action);
}
static void SetDefaultAction(BarItem barItem, object action)
{
barItem.SetValue(DefaultActionProperty, action);
}