public class graphdata
{
    DateTime Date;
    int Sales;
    int SOH;
}

List<graphdata> chartdata = new List<graphdata>();
            graphdata tempdata = new graphdata();

            foreach (var row in result)
            {
                tempdata.Date = row.Date;
                tempdata.Sales = row.Sales;
                tempdata.SOH = row.SOH;
                chartdata.Add(tempdata);
            }