GroupStyleSelector (WinRT) does not want to work, how to overcome it?

Question

Microsoft

Faced the same problem: bit.ly/PijKc9 , who knows how to solve it?

public class MyGroupStyleSelector : GroupStyleSelector
    {
        public GroupStyle OrdersStyle { get; set; }
        public GroupStyle DefaultStyle { get; set; }

        protected override GroupStyle SelectGroupStyleCore(object group, uint level)
        {
// Если вызывается с пустой группой - возвращаем стиль по умолчанию
            var gp = group as ICollectionViewGroup;
            if (gp == null)
                return DefaultStyle;

            switch (((MyGridGroup)gp.Group).Type)
            {
                default:
                    return DefaultStyle;
                case GroupType.Orders:
                    return OrdersStyle;
            }
        }
    }

The problem is that only the style that is returned for the first time is used (for group == null) for the rest of the groups, the style selection method is called and works correctly, but the result is ignored (((

Answer 1

Official Microsoft response on this: social.msdn.microsoft.com/Forums/ca-ES/winappswithcsharp/thread/809464a1-a152-472b-8b38-9538bc5975ee