public ActionResult QDetail(int id) { var dao = new AdminDao(); var session = (AdminLogin)Session[CommonConstants.USER_SESSION]; if (session.id_permission == 2) { return(View("Error")); } ViewBag.AdminName = session.name; var dao2 = new SubjectDao().ViewDetail(id); var dao1 = new QuestionDao().ListQuestionInSubject(id); if (dao2 == null) { return(View("Error")); } else { dao.UpdateLastLogin(session.id_admin); dao.UpdateLastSeen("Xem các câu hỏi của môn học " + dao2.subject_name, "/Admin/Subject/QDetail" + dao2.id_subject, session.id_admin); TempData["subject_name"] = dao2.subject_name; TempData["id_subject"] = id; var list = dao1.ToList(); foreach (var item in list) { item.question_content = RemoveHtml(RemoveFomula(item.question_content)); if (item.question_content.Length >= 90) { item.question_content = item.question_content.Substring(0, 90) + "...."; } } return(View(list)); } }