如何将上下文菜单添加到ListBoxItem？

<ListBoxItem x:Name="MyListBoxItem" ContextMenuOpening="MyListBoxItem_ContextMenuOpening">
    <TextBlock Text="My ListBoxItem" />
</ListBoxItem>

private void MyListBoxItem_ContextMenuOpening(object sender, ContextMenuEventArgs e)
{
    ContextMenu contextMenu = new ContextMenu();
    MenuItem menuItem1 = new MenuItem();
    menuItem1.Header = "Menu Item 1";
    menuItem1.Click += MenuItem1_Click;
    contextMenu.Items.Add(menuItem1);

    MenuItem menuItem2 = new MenuItem();
    menuItem2.Header = "Menu Item 2";
    menuItem2.Click += MenuItem2_Click;
    contextMenu.Items.Add(menuItem2);

    MyListBoxItem.ContextMenu = contextMenu;
}

private void MenuItem1_Click(object sender, RoutedEventArgs e)
{
    // 处理Menu Item 1的点击事件
}

private void MenuItem2_Click(object sender, RoutedEventArgs e)
{
    // 处理Menu Item 2的点击事件
}