public string delAppUpdate(HttpContext context)
        {
            int    appid = 0;
            string stat  = "{\"status\":0}";

            int.TryParse(context.Request.Form["appid"], out appid);
            BCtrl_Common bll = new BCtrl_Common();
            string       flg = bll.deleteAppUpdate(appid);

            if (flg == "1")
            {
                stat = "{\"status\":1}";
            }
            else
            {
                stat = "{\"status\":0}";
            }
            return(stat);
        }