public ActionResult CourseActivityQuizEdit(int TrainingId, int UnitId)
        {
            //ViewBag.Title = "测试编辑";
            Course_DetailBLL bll_CourseDetail = new Course_DetailBLL();
            Course_UnitContentBLL bll = new Course_UnitContentBLL();
            Course_UnitQuestionBLL bll_UnitQuestion = new Course_UnitQuestionBLL();

            //指定课程的课程ID
            ViewBag.TrainingId = TrainingId;
            //获取指定课程ID对应的课程单元信息
            ViewBag.TrainingInfo = bll_CourseDetail.GetTrainingInfoById(Convert.ToInt32(TrainingId));
            //获取测试Model
            ViewBag.ActivityQuizModel = bll.GetModel(Convert.ToInt32(UnitId), "Delflag = 0");
            //指定单元活动是否已经添加试题
            ViewBag.IsExistsQuizQues = bll_UnitQuestion.IsExistsQuizQues(Convert.ToInt32(UnitId));

            return View();
        }