public ActionResult ManageTeacher()
{
//var TeacherList = db.Teacher.Where(x => x.ID > 0).OrderByDescending(y => y.CreatedDate).ToList();
//ViewBag.TeacherList = TeacherList;
//var listScience = db.Science.Where(x => x.ID > 0).OrderByDescending(y => y.CreatedDate).ToList();
//ViewBag.listScience = listScience;
//return View();
var teacherDao = new TeacherDao();
var listTeacher = teacherDao.ListAll();
ViewBag.listTeacher = listTeacher;
return View();
}