private List <PlanDispatcDetails> planslist = null; //new variable to save all data public VehicleMW() { VMSEntities = new VMSEntities(); //Entity init dtfrom = Convert.ToDateTime(DateTime.Now.ToString("yyyy") + "-" + DateTime.Now.ToString("MM") + "-1 00:01:00"); dtto = Convert.ToDateTime(DateTime.Now.ToString("yyyy") + "-" + DateTime.Now.ToString("MM") + "-30 00:01:00"); }