//课程主题
        public ActionResult AjaxTrainingTopic(int categoryId)
        {
            List<Traning_Topic> listT = new PrepareTrainingApplyBLL().GetTrainingTopic("Delflag=0 and CategoryId=" + categoryId, "Sort desc");

            List<NationalAbility_Course> listN = new NationalAbility_CourseBLL().GetList2("Delflag=0 and Display=1 and TCategoryId=" + categoryId, "Sort");
            TopicAndNation topicAndNation = new TopicAndNation();
            topicAndNation.topic = listT;
            topicAndNation.nation = listN;
            return Json(topicAndNation, JsonRequestBehavior.AllowGet);
        }
        /// <summary>
        /// 根据小类获取主题
        /// </summary>
        /// <param name="Category"></param>
        /// <returns></returns>
        public ActionResult GetTopicByCategory(int tCategory)
        {
            //主题
            Traning_TopicBLL traning_TopicBLL = new Traning_TopicBLL();
            List<Traning_Topic> listT = traning_TopicBLL.GetList(" CategoryId=" + tCategory + " and  Delflag='false' and Display='true'", " Sort desc");

            List<NationalAbility_Course> listN = new NationalAbility_CourseBLL().GetList2("Delflag=0 and Display=1 and TCategoryId=" + tCategory, "Sort");
            TopicAndNation topicAndNation = new TopicAndNation();
            topicAndNation.topic = listT;
            topicAndNation.nation = listN;
            return Json(topicAndNation, JsonRequestBehavior.AllowGet);

            //return (new JavaScriptSerializer()).Serialize(list);
        }