protected void Page_Load(object sender, EventArgs e)
        {
            switch (DNTRequest.GetString("action"))
            {
            case "reg":
                AjaxResponse(DiscuzCloud.RegisterSite());
                break;

            case "bind":
                AjaxResponse(string.Format("{{url:\"{0}\"}}", DiscuzCloud.GetCloudBindUrl(userid)));
                break;

            case "sync":
                AjaxResponse(DiscuzCloud.SyncSite());
                break;

            case "resetkey":
                AjaxResponse(DiscuzCloud.ResetSiteKey());
                break;
            }
        }