使用ActionFilterAttribute进行重定向注意事项

public class UserAuthenticationAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            if (filterContext == null || filterContext.HttpContext == null)
                return;

            HttpRequestBase request = filterContext.HttpContext.Request;
            if (request == null)
                return;


            var workContext = EngineContext.Current.Resolve<IWorkContext>();

            if(workContext.CurrentSISTUser==null)
            {
                filterContext.Result = new RedirectToRouteResult(new RouteValueDictionary(new
                {
                    controller = "Account",
                    action = "Login"
                }));
                //filterContext.HttpContext.Response.Redirect("/Account/Login", true);
                return;
            }

        }
    }