public string Authenticate(string date) { var result = "Success"; try { var userid = Context.GetUser(); var emp = (from empl in EmployeeLoginMapping where empl.employeeid == userid select empl).FirstOrDefault(); var empDetail = (from empl in Employee where empl.employeeid == userid select empl).FirstOrDefault(); var qry = from pd in PaymentDetail where pd.AddedAt.Date == Convert.ToDateTime(date).Date&& pd.Canceled == false select pd; if (empDetail.divisionid != null) { qry = from paydata in qry join bill in Bill on paydata.BillNo equals bill.Id join us in UnitSummary on bill.UnitId equals us.id where us.divisionid == empDetail.divisionid select paydata; } var authtime = DateTime.Now; var rows = qry.ToList(); foreach (var pd in rows) { pd.Authenticated = true; pd.AuthAt = authtime; pd.AuthBy = emp.loginname; } PaymentDetail.UpdateRange(rows); this.SaveChanges(); } catch (Exception ex) { result = "Failed :" + ex.Message; } return(result); }