MVC全局验证Cookie 截取异步数据后，想实现一个效果

Question

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
var cook = HttpContext.Current.Request.Cookies["cc"];
if (IsLogin == false)
{
// 异步
var res = HttpContext.Current.Response;
if (HttpContext.Current.Request.Headers["X-Requested-With"] == "XMLHttpRequest")
{
if (cook == null)
{
//？？？？这里要怎么触发 父窗体的 js事件呢？？ 这样写毫无效果，一直纠结。
HttpContext.Current.Response.Write("top.getElementById('ajaxon').onclick();");
HttpContext.Current.Response.End();
}
}
// 同步
if (HttpContext.Current.Request.Headers["X-Requested-With"] == null)
{

            }
            return;
        }
    }

Answer 1

top.document.getElementById