public ActionResult _CommentCase()
        {
            string          from_uname     = Request["from_uname"];
            string          from_account   = Request["from_account"];
            string          from_uid_type  = Request["from_uid_type"];
            string          topic_id       = Request["topic_id"];
            string          topic_type     = Request["topic_type"];
            string          commentcontent = Request["commentcontent"];
            int             result         = 0;
            MsSqlDataSource mysqlD         = new MsSqlDataSource();
            string          thum           = "";//获取缩略图

            if (!String.IsNullOrEmpty(from_account))
            {
                thum = otherService.getPhotoUrlthum(from_account, from_uid_type);
            }
            if (thum == "2")
            {
                return(Json(new { RetCode = result }, JsonRequestBehavior.AllowGet));
            }
            //插入评论
            string comment_guid = Guid.NewGuid().ToString();
            string insertStr    = string.Format("insert into Z_Comment(topic_id,topic_type,content,from_uname,from_account,from_uid_type,addtime,comment_guid,thum) values('{0}','{1}','{2}','{3}','{4}','{5}','{6}','{7}','{8}')", topic_id, topic_type, commentcontent, from_uname, from_account, from_uid_type, DateTime.Now.ToString("yyyy-MM-dd"), comment_guid, thum);

            result = mysqlD.ExecuteNonQuery(insertStr);
            Z_Comment comment = new Z_Comment();

            if (result > 0)
            {
                comment = new Z_Comment
                {
                    from_uname    = from_uname,
                    from_account  = from_account,
                    from_uid_type = from_uid_type,
                    content       = commentcontent,
                    addtime       = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"),
                    thum          = thum,
                    comment_guid  = comment_guid
                };
            }
            return(PartialView(comment));
        }