我如何从我的ApiController中的ActionFilterAttribute访问属性?

我有一个自定义的ActionFilterAttribute。对于这个问题，我们假设如下:

public class CustomActionFilterAttribute : ActionFilterAttribute {
    public bool success { get; private set };
    public override void OnActionExecuting(HttpActionContext actionContext) {
        //Do something and set success
        success = DoSomething(actionContext);
    }
}

我的控制器然后用CustomActionFilter装饰。我要找的是一种方法(在我的控制器方法)做一些事情，如:

[CustomActionFilter]
public class MyController : ApiController {
    public ActionResult MyAction() {
        //How do I get the 'success' from my attribute?
    }
}

如果有更容易被接受的方法，请告诉我。

[CustomActionFilter]
public class MyController : ApiController {
    public ActionResult MyAction() {
        var myAttribute = ControllerContext
                          .ControllerDescriptor
                          .GetCustomAttributes<CustomActionFilter>()
                          .Single();
        var success = myAttribute.success;
    }
}