public JsonResult AjaxBatchDeleteTopic()
        {
            string dataString = Request.Form["Data"];

            dataString = HttpUtility.UrlDecode(dataString);
            List <int> data   = SerializeHelper.JsonDeserialize <List <int> >(dataString);
            var        result = TopicService.BatchUpdateTopicStatus(data, TopicStatus.Delete, CurrUser);

            return(new JsonResult()
            {
                Data = result
            });
        }