ASP.Net和DotNetNuke-为什么客户AuthorizeAttribute会覆盖ValidateAntiForgeryToken?

public class CodeWomplerAuthorizeAttribute : AuthorizeAttribute
{
    protected override bool AuthorizeCore(HttpContextBase httpContext)
    {
        return SessionManager.CheckSession(SessionKeys.User)==true;
    }

    protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
    {
        if (SessionManager.CheckSession(SessionKeys.User) == false)
        {
            filterContext.Result = new RedirectToRouteResult(
                new RouteValueDictionary 
                {
                    { "action", "ActionName" },
                    { "controller", "ControllerName" }
                });
        }
        else
            base.HandleUnauthorizedRequest(filterContext);
    }
}

以下是控制器中的一个示例函数:

    [HttpPost]
    [DotNetNuke.Web.Mvc.Framework.ActionFilters.ValidateAntiForgeryToken]
    [CodeWomplerAuthorize]
    public string InitializeNew()
    {
        var techSheet = new TechSheet {WorkOrder = {CreateDate = DateTime.Now}};
        var empList = new WorkOrderEmployeeController().Gets().Recordset;
        return JsonConvert.SerializeObject(Json(new{techSheet,empList}));
    }

我的自定义属性非常有效。但是,如果我包括[DotNetNuke.Web.Mvc.Framework.ActionFilters.ValidateAntiForgeryToken],我就会失败。

如何在AuthorizeCore的覆盖中包括ValidateAntiForgeryToken?