private static void OnItemsChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
CalendarMonthView userControl = (CalendarMonthView)obj;
userControl.UpdateItemsCollectionObservers(args.OldValue as IEnumerable <CalendarItemModel>, args.NewValue as IEnumerable <CalendarItemModel>);
}
private static void OnDateChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
CalendarMonthView userControl = (CalendarMonthView)obj;
userControl.UpdateView();
}
