public void GetGradeGroupAll() { GradeBL gradebl = new GradeBL(); List <GradeGroupEntities> gradeList = new List <GradeGroupEntities>(); gradeList = gradebl.GetAllGradeGroup(); ViewBag.getAllGradeGroup = gradeList.Select(x => new SelectListItem { Text = x.GradeGroup, Value = x.ID.ToString() } ); }