WPF 小小案列（同步异步）

 private void BtnButton_Click(object sender, RoutedEventArgs e)
 {
 MessageBox.Show("hello Word");
 }
 private void ModifyUI()
 {
 // 模拟一些工作正在进行
 Thread.Sleep(TimeSpan.FromSeconds());
 //lblHello.Content = "欢迎你光临WPF的世界,Dispatcher";
 this.Dispatcher.Invoke(DispatcherPriority.Normal, (ThreadStart)delegate ()
 {
 lblHello.Content = "欢迎你光临WPF的世界,Dispatche 同步方法 ！！"+DateTime.Now.ToString();
 MessageBox.Show("你好我是多线程同步方法");
 });
 }

 private void btnThd_Click(object sender, RoutedEventArgs e)
 {
 Thread thread = new Thread(ModifyUI);
 thread.Start();
 }
 /// <summary>
 /// 异步方法
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void btnAppBeginInvoke_Click(object sender, RoutedEventArgs e)
 {
 new Thread(() =>
 {
 Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Normal,
 new Action(() =>
 {
 Thread.Sleep(TimeSpan.FromSeconds());

 this.lblHello.Content = "欢迎你光临WPF的世界,Dispatche 异步方法！！" + DateTime.Now.ToString();
 MessageBox.Show("你好我是多线程异步方法");
 }));
 }).Start();
 }