wpf里面的跨线程(thread)

private void ForecastButtonHandler(object sender, RoutedEventArgs e)
{
    // Start fetching the weather forecast asynchronously.
    NoArgDelegate fetcher = new NoArgDelegate(
        this.FetchWeatherFromServer);

    fetcher.BeginInvoke(null, null);
}//见异步调用同步方法

private void FetchWeatherFromServer()
{

    // Schedule the update function in the UI thread.
    tomorrowsWeather.Dispatcher.BeginInvoke(
        System.Windows.Threading.DispatcherPriority.Normal,
        new OneArgDelegate(UpdateUserInterface),
        weather);
}//tomorrowsWeather是UI线程的一个control

WPF:
http://msdn2.microsoft.com/en-us/library/ms741870.aspx