protected override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            base.OnActionExecuting(filterContext);

            if (Session["ID"] == null)
            {
                if (Request.IsAjaxRequest())
                { 
                
                }
                else
                {
                    filterContext.Result = new JavaScriptResult() { Script = "<script>window.parent.location.href = '/home/login';</script>" };
                }
            }
        }