//public IEnumerable<Get_Coach_By_Train_ID_Result> Get_Coach_By_TrainDAL(int idtrain)
        //{
        //    using (var orr = new Online_Railway_reservation_systemEntities())
        //    {
        //        orr.Configuration.ProxyCreationEnabled = false;
        //        foreach (var item in orr.Get_Coach_By_Train_ID(idtrain))
        //        {
        //            yield return item;
        //        }
        //    }
        //}

        public IEnumerable<Search_Coach_Type_Result> Search_CoachDAL(int trainid, string coachtype)
        {
            using (var orr = new Online_Railway_reservation_systemEntities())
            {
                orr.Configuration.ProxyCreationEnabled = false;
                foreach (var item in orr.Search_Coach_Type(trainid,coachtype))
                {
                    yield return item;
                }
            }
        }