private IDictionary <string, object> GetJsonResult(ViewDataDictionary viewData)
        {
            filterExecutedContext.Object.Result = new ViewResult
            {
                ViewData = viewData
            };

            gridAttribute.OnActionExecuted(filterExecutedContext.Object);

            var result = (JsonResult)filterExecutedContext.Object.Result;

            return((IDictionary <string, object>)result.Data);
        }