如果超过5分钟,则终止Web服务中的函数

如果函数在5分钟内没有完成,如何终止函数并在webservice中返回响应?

public void myfunction(){
    Thread workerThread = Thread.CurrentThread;
    bool finished = ExecuteWithTimeLimit(TimeSpan.FromMilliseconds(30000), () =>
    {
       .....long time execution here....

    });

    if (!finished)
    {
        workerThread.Abort();
    }
}


public static bool ExecuteWithTimeLimit(TimeSpan timeSpan, Action codeBlock)
    {
        try
        {
            Thread workerThread = new Thread(() => codeBlock());
            workerThread.Start();

            bool finished = workerThread.Join(timeSpan);


            return finished;

        }
        catch (AggregateException ae)
        {
            throw ae.InnerExceptions[0];
        }
    }