public int Delete(int id)
        {
            seat_exam_info exam = db.seat_exam_info.Where(x => x.exam_id == id).FirstOrDefault <seat_exam_info>();

            db.seat_exam_info.Remove(exam);
            return(db.SaveChanges());
        }
        public int Insert(ExamInfoViewModel repo)
        {
            seat_exam_info exam_Info = new seat_exam_info()
            {
                exam_date     = repo.exam_date,
                faculty       = repo.faculty,
                semester      = repo.semester,
                subject_name  = repo.subject_name,
                exam_duration = repo.exam_duration,
                programme     = repo.programme
            };

            db.seat_exam_info.Add(exam_Info);
            return(db.SaveChanges());
        }