public ActionResult Delete(int id, FormCollection collection) { try { // TODO: Add delete logic here MonThiDao dao = new MonThiDao(); var ketqua = dao.XoaMOnThi(id); if (ketqua) { return(RedirectToAction("Index")); } else { ModelState.AddModelError("", "Loi error"); } } catch (Exception ex) { ModelState.AddModelError("", ex); } return(View("Index")); }