求助 事件控制线程问题

求事件控制线程的例子,要能用按钮触发事件(Event)控制暂停,恢复,退出,thread.Suspend()/thread.Resume()这种不要
因为Event.WaitOne()是挂起当前线程,怎么通过事件让指定的线程执行这个从而达到暂停效果
试了Dispatcher.invoke老死锁,BeginInvoke么怎么也跑不进去

public class AA

    {

        public delegate void StatusChangedEventHandler(object sender, StatusEventArgs e);

        public event StatusChangedEventHandler OnStatusChanged;

        public void ChangeStatus(ThreadStatus s)

        {

            if (OnStatusChanged != null)

                OnStatusChanged(this, new StatusEventArgs(s));

        }

    }



public void DoWork()

        {

            dper = Dispatcher.CurrentDispatcher;

            aa.OnStatusChanged += ThreadPause;

            for (int i = 0; i < 20;i++ )

            {

                string s = string.Format("ThreadID:{0} Add i:{1}", Thread.CurrentThread.ManagedThreadId.ToString(), i.ToString());

                if (this.listBox1.InvokeRequired)

                {

                    this.listBox1.Invoke(new MethodInvoker(() => { this.listBox1.Items.Add(s); }));

                }

                else

                {

                    this.listBox1.Items.Add(s);

                }

                Thread.Sleep(1000);

            }

        }

 public void ThreadPause(object sender, StatusEventArgs e)

        {

            Console.WriteLine(string.Format("ThreadPause Thread id:{0}", Thread.CurrentThread.ManagedThreadId));

            if (e.status == ThreadStatus.Pause)

            {

                dper.BeginInvoke(new MethodInvoker(() =>

                {

                    Console.WriteLine(string.Format("CurrentDispatcher Thread id:{0}"), Thread.CurrentThread.ManagedThreadId);

                    mEvent.WaitOne();

                }),null);

            }

}

 private void btnPause_Click(object sender, EventArgs e)

        {

            aa.ChangeStatus(ThreadStatus.Pause);

        }