public ActionResult CheckPassword(FormCollection form) { var session = (StudentLogin)Session[CommonConstants.STUDENT_SESSION]; var id_student = session.id_student; if (studentDao.getTesting(id_student) > 0) { return(RedirectToAction("DoingTest")); } string code = form["id_room"]; int id_room = Convert.ToInt32(code); string password = form["password"]; string room_password = studentDao.GetPass(id_room); if (!password.Equals(room_password)) { TempData["status_id"] = false; TempData["status"] = "Mật khẩu không đúng!"; return(RedirectToAction("Index")); } else { studentDao.ConnectStudentExam(id_room, id_student); studentDao.UpdateStatus(id_room, id_student, studentDao.GeTimeToDo(id_room) + ":00"); return(RedirectToAction("DoingTest")); } }