ASP.NET MVC Filter- 登录验证 【异步刷新列表视图】

   public class TAjaxListLoginValidateAttribute : FilterAttribute, IAuthorizationFilter
     {
         public void OnAuthorization(AuthorizationContext filterContext)
         {
             try
             {
                 if (!TUser.IsLogin())
                 {
                     var viewResult = new ViewResult();
                     viewResult.ViewName = "~/Views/Error/NeedLogin.cshtml";
                     if (filterContext.HttpContext.Request.UrlReferrer != null)
                         viewResult.ViewBag.ReturnUrl = HttpUtility.UrlEncode(filterContext.HttpContext.Request.UrlReferrer.AbsolutePath);
                     filterContext.Result = viewResult;
                 }

             }
             catch (Exception ex)
             {

                 Log.Fatal(ex, "TAjaxLoginValidateAttribute::OnAuthorization(AuthorizationContext filterContext)", TLogMessage.FilterError);
             }
         }
     }