public ActionResult Save() { var user = User.Identity.Name; var uid = db.TeacherTBs.Single(c => c.Email == user).Id; //ViewBag.RegNo = enrollCourseManager.GetSelectListItemsForDropdown(); ViewBag.RegNo = enrollCourseManager.AllStudentByTeacherId(uid); ViewBag.Grades = gradeLetterManager.GetSelectListItemsForDropdown(); return(View()); }