private void FillViewList(List <GoodsItem> list)
{
ItemsList.Clear();
var b = from c in list.OrderByDescending(a => a.Value).GroupBy(a => a.Ttype)
where c.Count() > 0
select new GroupItem(c.Count(), c.FirstOrDefault().Name, c.FirstOrDefault().Ttype, c.FirstOrDefault().Value);
ItemsList.AddRange(b);
}