private static void OnSetCommandParameterCallback(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
        {
            IApplicationBarMenuItem item = dependencyObject as IApplicationBarMenuItem;

            if (item != null)
            {
                AppBarItemCommandBehavior <IApplicationBarMenuItem> behavior = GetOrCreateBehavior(item);
                behavior.CommandParameter = e.NewValue;
            }
        }
        private static AppBarItemCommandBehavior <IApplicationBarMenuItem> GetOrCreateBehavior(IApplicationBarMenuItem item)
        {
            AppBarItemCommandBehavior <IApplicationBarMenuItem> behavior = (item as FrameworkElement).GetValue(ClickCommandBehaviorProperty) as AppBarItemCommandBehavior <IApplicationBarMenuItem>;

            if (behavior == null)
            {
                behavior = new AppBarItemCommandBehavior <IApplicationBarMenuItem>(item);
                (item as FrameworkElement).SetValue(ClickCommandBehaviorProperty, behavior);
            }

            return(behavior);
        }