Silverlight：线程/延迟操作/异步调用/事件(Silverlight: Threads / Delayed Actions / Asynchronous invocations/events

Silverlight：线程/延迟操作/异步调用/事件(Silverlight: Threads / Delayed Actions / Asynchronous invocations/events)

我有以下场景：当用户将鼠标移出弹出窗口时，我想要动画发生，五秒钟之后，我想删除一个PopUp。

这是我期望这样做的代码是：

private bool leftPopup = false; public void AnimatePopupOut(object sender, MouseEventArgs e) { myAnim.Begin(); (new Thread(new ThreadStart(delayedRemovePopup))).Start(); } private void delayedRemovePopup() { leftPopup = true; Thread.Sleep(5000); PopUp.IsOpen = false; }

第一行“leftPopup = true”很好，但第三行“PopUp.IsOpen = false”给了我一个访问冲突异常，可能是因为这个对象属于GUI线程。 有什么方法可以访问PopUp.IsOpen属性吗？ 如果没有，是否有其他方式可以在一段时间后调用事件来执行此操作？

干杯

聂

I've got the following scenario: when a user moves the mouse out of a popup, I want an animation to happen, and five seconds later, I want to remove a PopUp.

This is the code I expected to do this with is:

private bool leftPopup = false; public void AnimatePopupOut(object sender, MouseEventArgs e) { myAnim.Begin(); (new Thread(new ThreadStart(delayedRemovePopup))).Start(); } private void delayedRemovePopup() { leftPopup = true; Thread.Sleep(5000); PopUp.IsOpen = false; }

The first line, "leftPopup = true" is fine, but the third, "PopUp.IsOpen = false" gives me an access violation exception, probably because this object belongs to the GUI thread. Is there any way I can gain access to the PopUp.IsOpen property? If not, is there another way that I can call an event after some time to do this?

Cheers

Nik

最满意答案

尝试使用PopUp.Dispatcher.Invoke（）。 这将把你的回调编组回UI线程。

Try using the PopUp.Dispatcher.Invoke(). That will marshal your call back to the UI thread.