public bool UpdateSevice(ServiceDto service)
 {
     var tmp = db.tbServiceRef.FindByTestId(service.Id);
     tmp.TestName = service.TestName;
     try
     {
         db.AcceptChanges();
         return true;
     }
     catch (Exception)
     {
         return false;
     }
 }
 public bool InsertSevice(ServiceDto service)
 {
     db.tbServiceRef.AddtbServiceRefRow(service.TestId, service.TestName);
     try
     {
         db.AcceptChanges();
         return true;
     }
     catch (Exception)
     {
         return false;
     }
 }