public List <DataChart> getFilteredList() { List <DataChart> filtredList = ListXY .GroupBy(sec => sec.X.Second) .Select(p => new DataChart { X = p.First().X, Y = Convert.ToInt32(p.Sum(g => g.Y)), }).ToList(); return(filtredList); }
public void add(int Y, DateTime X) { ListXY.Add(new DataChart(Y, X)); }