如何在WPF应用程序中创建可更改另一侧内容的垂直菜单？

<Grid>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="Auto"/>
        <ColumnDefinition/>
    </Grid.ColumnDefinitions>

    <Menu Grid.Column="0" VerticalAlignment="Stretch">
        <MenuItem Header="菜单项1" Click="MenuItem_Click"/>
        <MenuItem Header="菜单项2" Click="MenuItem_Click"/>
        <MenuItem Header="菜单项3" Click="MenuItem_Click"/>
    </Menu>

    <ContentControl Grid.Column="1" x:Name="contentControl" Content="默认内容"/>
</Grid>

private void MenuItem_Click(object sender, RoutedEventArgs e)
{
    MenuItem menuItem = sender as MenuItem;
    string selectedMenuItem = menuItem.Header.ToString();

    // 根据选择的菜单项更新内容
    switch (selectedMenuItem)
    {
        case "菜单项1":
            contentControl.Content = "菜单项1的内容";
            break;
        case "菜单项2":
            contentControl.Content = "菜单项2的内容";
            break;
        case "菜单项3":
            contentControl.Content = "菜单项3的内容";
            break;
        default:
            break;
    }
}