public Semesters createSemester(string name)
        {
            using (var db = new NTR2013Entities())
            {
                var original = db.Semesters.ToList();
                foreach (Semesters s in original)
                {
                    if (s.Name.Trim().Equals(name))
                    {
                        return(null);
                    }
                }

                var semester = new Semesters {
                    Name = name
                };
                db.Semesters.Add(semester);
                db.SaveChanges();
                return(semester);
            }
        }
        public Semesters createSemester(string name)
        {
            using (var db = new NTR2013Entities())
            {
                var original = db.Semesters.ToList();
                foreach (Semesters s in original)
                {

                    if (s.Name.Trim().Equals(name))
                        return null;
                }

                var semester = new Semesters { Name = name };
                db.Semesters.Add(semester);
                db.SaveChanges();
                return semester;

            }
        }