OnActionExecuted被意外调用

Question

我有以下操作方法：

        public class HomeController : Controller
        {
            [ProfileAction]
            [CustomAction]
            public string FilterTest()
            {
                //Does not get executed
                return "This is the FilterTest action";
            }
        }

以下是过滤器的代码：

public class CustomActionAttribute : FilterAttribute, IActionFilter
{
    public void OnActionExecuting(ActionExecutingContext filterContext)
    {
        //This is executed first
    }

    public void OnActionExecuted(ActionExecutedContext filterContext)
    {
        //This is executed third
    }
}

public class ProfileActionAttribute : FilterAttribute, IActionFilter
{
    public void OnActionExecuting(ActionExecutingContext filterContext)
    {
        //This is executed second
        filterContext.Result = new HttpNotFoundResult();
    }

    public void OnActionExecuted(ActionExecutedContext filterContext)
    {
        //this does not execute
    }
}

根据Microsoft，OnActionExecuted()是在执行控制器动作后执行的。

从未调用动作方法FilterTest()，因为我在ProfileActionAttribute.OnActionExecuting()中设置了Result属性。 如果从未调用动作方法，为什么要调用CustomActionAttribute.OnActionExecuted（）？