沿着Visual Tree传递

内置路由事件

方法一：在XAML里面给元素添加路由事件

<StackPanel ButtonBase.Click="btn_Click">
        <Button x:Name="btn"/>
        <TextBox x:Name="txt"/>
        <TextBox x:Name="txt2"/>
    </StackPanel>

 private void btn_Click(object sender, RoutedEventArgs e) {
            MessageBox.Show((e.OriginalSource as FrameworkElement).Name);
        }

方法二：在C#代码中添加路由事件

 public MainWindow() {
            InitializeComponent();
            this.stp1.AddHandler(ButtonBase.ClickEvent, new RoutedEventHandler(this.btn_Click));
        }
        private void btn_Click(object sender, RoutedEventArgs e) {
            MessageBox.Show((e.OriginalSource as FrameworkElement).Name);
        }

自定义路由事件