请求取消令牌的任务事件或操作

这是我的代码：

public sealed class ProcessingTask : ProcessingObject { private CancellationTokenSource _cancelToken; private int _timeOut = 10000; public int ProcessObjectID { get; private set; } public Task ProcessObjectTask { get; private set; } public QueueObject queueObject { private get; set; } public ProcessingTask(int processObjectID, Uri url) : base(url) { this.ProcessObjectID = processObjectID; } public void ResetTask() { _cancelToken = new CancellationTokenSource(_timeOut); ProcessObjectTask = new Task(() => DoTaskWork(), _cancelToken.Token); } private void DoTaskWork() { Console.WriteLine("Thread {0} was started...", ProcessObjectID); // HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url); // imitate hard process HttpWebResponse response = (HttpWebResponse)request.GetResponse(); // response.Dispose(); // // Your logic here //queueObject.QueueObjectId - dequeud object is available here // if (_cancelToken.IsCancellationRequested) { Console.WriteLine("Thread {0} was timed out...", ProcessObjectID); } else { Console.WriteLine("Thread {0} was finished...", ProcessObjectID); } } } 

如果CancellationRequested，我想知道是否存在使用事件（或某些操作）的任何方法。 我的意思是我需要在_timeout Expired时完全执行SomeMethod（）。 任何人都可以解释一下：一般来说可能吗？

 _cancelToken.Token.Register(() => DoStuff());