public JObject MarkComplete(int videoId)
        {
            var       UserInfo  = Request.Cookies["UserInfo"];
            int       CID       = int.Parse(UserInfo["UserCode"]);
            VideoMark videoMark = new VideoMark();

            videoMark.CID     = CID;
            videoMark.VideoID = videoId;
            videoMark.Save();
            JObject responce = new JObject();

            responce.Add("Status", 200);
            return(responce);
        }