MVC 4 beta 中未触发基类中的 ExecuteCore() [英] ExecuteCore() in base class not fired in MVC 4 beta

问题描述

我有一个基本的控制器类:

I have a base controller class:

我所有的其他控制器都像这样继承了这个 BaseClass

And all my other controller inherits this BaseClass like this

所有这些在 MVC3 中都很好用(今天再次测试，它确实有效)但似乎 BaseController 中的 ExecuteCore 在 MVC 4 beta 中不再被触发.

All this works great in MVC3 (test again today, it really works) but it seems that the ExecuteCore in BaseController is not fired any more in MVC 4 beta.

有什么想法吗?或者引擎盖下发生了什么巨大的变化?非常感谢.

Any idea? Or Anything huge has changed under the hood? Thanks very much.

public class BaseController : Controller
{
    private string _myData;

    public string MyData
    {
        get
        {
            return _myData;
        }
    }

    protected override void ExecuteCore()
    {
        _myData = "I am doing something";

        base.ExecuteCore();
    }
}


public class HomeController : BaseController
{
    public ActionResult Index()
    {
        ViewBag.MyData = MyData;
        // Doing something with value in BaseClass

        return View();
    }
}

推荐答案

我能够重现您的问题.ExecuteCore 的用法好像变了.但我没有找到任何关于它的信息.我猜这与现在 Controller 实现 IAsyncController 而不是 AsyncController 的事实有关.

I was able to reproduce your problem. It seems that the usage of ExecuteCore is changed. But I haven't find any information about it. My guess it's related to the fact that now the Controller implements IAsyncController not the AsyncController.

但是我找到了一种解决方法来获得 MVC4 的旧行为:

However I've found a workaround to get the old behavior with MVC4:

将此添加到 BaseContoller :

protected override bool DisableAsyncSupport
{
    get { return true; }
}

来自 DisableAsyncSupport(我强调添加):

From The MSDN page for DisableAsyncSupport (emphasis add by me):

这个标志是为了向后兼容.ASP.NET MVC 4. 允许控制器支持异步模式.这意味着在派生类上不会调用 ExecuteCore.如果派生类仍然需要调用 ExecuteCore，它们可以覆盖此标志并设置为 true.

This flag is for backwards compatibility. ASP.NET MVC 4. allows a controller to support asynchronous patterns. This means ExecuteCore doesn't get called on derived classes. Derived classes can override this flag and set to true if they still need ExecuteCore to be called.

这篇关于MVC 4 beta 中未触发基类中的 ExecuteCore()的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！