为什么来自mvcontrib的modelStateToEmpData属性不工作?

为了验证目的,我只是在同一个控制器中将ModelState从一个操作传递到另一个操作。但是,模型状态不会得到更新。我看到tempdata[“uuuuuu mvcontrib”validationfailures_uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu]包含来自转发操作的ModelStateDictionary,但我假设这应该自动转移到我当前的ModelState中?我哪里出错了?

我使用的是ASP.NET MVC2和MVCContrib 2.0.36.0。我还尝试用这个属性来修饰控制器,但是结果是相同的。

代码:

[HttpGet]
[ModelStateToTempData]
public ActionResult NewsEventsSignup()
{
    var newsEventsSignupDetails = this.TempData.GetItem<NewsEventsSignupDetails>();

    var viewModel = _newsEventsSignupPageViewModelMapper.MapFrom(newsEventsSignupDetails);

    return this.View(viewModel);
}

[HttpPost]
[ModelStateToTempData]
[ValidateAntiForgeryToken]
public ActionResult NewsEventsSignup(NewsEventsSignupFormViewModel newsEventsSignup)
{
    ActionResult resultToReturn;

    var newsEventsSignupDetails = _newsEventsSignupDetailsMapper.MapFrom(newsEventsSignup);

    try
    {
        _newsEventsSignupTasks.SignupForNewsAndEvents(newsEventsSignupDetails);
        resultToReturn = this.RedirectToAction(x => x.Index());
    }
    catch (RulesException e)
    {
        e.AddModelStateErrors(this.ModelState); // from xVal
        this.TempData.AddItem(newsEventsSignupDetails); // for showing invalid input
        resultToReturn = this.RedirectToAction(x => x.NewsEventsSignup());
    }

    return resultToReturn;
}