如何在GUI线程中执行代码？ [英] How to execute code in the GUI Thread?

问题描述

我有一个FileSystemWatcher的上Changed事件作出反应。

I have a FileSystemWatcher that react on the Changed event.

我想打开该文件，读取其内容的文本框显示它和隐藏有弹出1秒之后被创建。该代码几乎工作，但隐藏弹出当事情失败

I want to open the file, read its content display it in a textbox and hide the popup that has been created after 1 sec. The code almost work but something fail when hiding the popup.

下面是代码片段：

       txtLog.Dispatcher.Invoke(DispatcherPriority.Normal, (Action)delegate() {
            this.txtLog.Text = dataToDisplay;
            extendedNotifyIcon_OnShowWindow();
            Thread threadToClosePopup = new Thread(new ThreadStart((Action)delegate() { 
                Thread.Sleep(1000); 

                extendedNotifyIcon_OnHideWindow();
       }));
            threadToClosePopup.Start();
        });

正如你所看到的，我使用Invoke设置文本，因为该事件是在不同的线程（FileSystemWatcher的）。但隐藏extendedNotifyIcon_OnHideWindow（）不是在GUI的线程执行的窗口。我怎样才能在GUI线程中执行呢？

As you can see, I use the Invoke to set the text because the event is in a different thread (FileSystemWatcher). But to hide the windows the extendedNotifyIcon_OnHideWindow() is not executed in the thread of the GUI. How can I execute it in the GUI thread?

推荐答案

要执行 extendedNotifyIcon_OnHideWindow GUI线程的方法使用调度像你一样表现出来。

To execute the extendedNotifyIcon_OnHideWindow method on the GUI thread use the Dispatcher as you did to show it.

Thread threadToClosePopup = new Thread(new ThreadStart((Action)delegate() { 
  Thread.Sleep(1000); 
  txtLog.Dispatcher.Invoke(
    DispatcherPriority.Normal,
    (Action)() => extendedNotifyIcon_OnHideWindow());
}));

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