private void Update()
        {
            obj = Request["obj"];
            ent = JsonHelper.GetObject <SupervisionRiZhi>(obj);
            SupervisionRiZhi oldEnt = SupervisionRiZhi.Find(ent.Id);
            EasyDictionary   dic    = JsonHelper.GetObject <EasyDictionary>(obj);

            ent = DataHelper.MergeData <SupervisionRiZhi>(oldEnt, ent, dic.Keys);
            ent.DoUpdate();
        }