我刚才已经想通了，我可以在HandleUnauthorized正常请求和Ajax请求的过滤器
我在我的AuthorizeAttribute子类中重写请求方法。这样一个Ajax请求我可以创建一个JSON结果或为此事别的东西，和正常的请求仍然会显示在登录页面。在code是如下：

I have just figured it out, I can filter between normal requests and ajax requests in the HandleUnauthorized Request method that I override in my AuthorizeAttribute sub class. That way for an ajax request I can create a json result or something else for that matter, and for normal requests it would still show up the login page. the code is as follows:

protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
    {
        if (filterContext.RequestContext.HttpContext.Request.IsAjaxRequest())
        {
            JsonResult UnauthorizedResult = new JsonResult();
            UnauthorizedResult.Data = "{ request : 'unauthorized' }";
            UnauthorizedResult.JsonRequestBehavior = JsonRequestBehavior.AllowGet;
            filterContext.Result = UnauthorizedResult;
        }
        else
        {
            base.HandleUnauthorizedRequest(filterContext);
        }
    }

我依然会不标记我的问题是解决了，所以如果有人可以建议做一个更好的方式，我仍然开放的建议。

still I will not mark my question as resolved, so if someone can suggest a better way of doing it, I am still open to suggestions.