async Task SaveImage(String url)
        {
            if (IsNotAjax())
            {
                return;
            }
            Response.ContentType = "application/json";
            try
            {
                var files = Request.Files;
                var list  = await _baseController.SaveAttachments(TenantId, url, files, UserId);

                var rval = new ExpandoObject();
                rval.Set("status", "OK");
                rval.Set("ids", list);
                String result = JsonConvert.SerializeObject(rval, BaseController.StandardSerializerSettings);
                Response.Write(result);
            }
            catch (Exception ex)
            {
                WriteExceptionStatus(ex);
            }
        }