public void UpdateTopList()
{
TopList = Statistic.ListTopProductGroup();
TopList = TopList.GroupBy(x => x.ProductGroup).OrderByDescending(g => g.Count()).Select(x => x.FirstOrDefault()).Take(_amount).ToList();
}
public StatisticProductTopVM()
{
Amount = 10;
TopList = Statistic.ListTopProductGroup();
TopList = TopList.GroupBy(x => x.ProductGroup).OrderByDescending(g => g.Count()).Select(x => x.FirstOrDefault()).Take(Amount).ToList();
}