在 ASP.NET MVC 2 异步控制器中，操作筛选器是否异步执行？
在 ASP.NET MVC 2 异步控制器中，我们可以执行以下操作：
public class SomeController : AsyncController
{
[Blurb]
public void FooAsync()
{
this.AsyncManager.OutstandingOperations.Increment();
Task.Factory.StartNew(
() =>
{
this.AsyncManager.Parameters["result"] = new BazResult();
this.AsyncManager.OutstandingOperations.Decrement();
});
}
public ActionResult FooCompleted(ActionResult result)
{
return result;
}
}
我的问题是，在这种情况下，操作过滤器 "Blurb" 是否异步执行？换句话说，它的同步性质是否自动包装到异步调用中？
In ASP.NET MVC 2 asynchronous controllers, we can do something like this:
public class SomeController : AsyncController
{
[Blurb]
public void FooAsync()
{
this.AsyncManager.OutstandingOperations.Increment();
Task.Factory.StartNew(
() =>
{
this.AsyncManager.Parameters["result"] = new BazResult();
this.AsyncManager.OutstandingOperations.Decrement();
});
}
public ActionResult FooCompleted(ActionResult result)
{
return result;
}
}
My question is, does the action filter "Blurb" in this case execute asynchronously? In other words, is its synchronous nature automatically wrapped into an asynchronous call?
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我查看了 AsyncControllerActionInvoker 的内部情况，看起来它确实将它们包装到一组异步调用和延续中。它调用 BeginInvokeActionMethodWithFilters，进而设置 InvokeActionMethodFilterAsynchronously。
对于那些好奇的人，源代码位于 codeplex 上。
I took a look under the covers at AsyncControllerActionInvoker and it looks like it does indeed wrap them into a set of asynchronous calls and continuations. It makes a call to BeginInvokeActionMethodWithFilters which in turn sets up InvokeActionMethodFilterAsynchronously.
For those who are curious, the source is on codeplex.