WPF控件-层级控件-Menu-嵌套结构

<?xml version="1.0" encoding="utf-8" ?>
<Data xmlns="">
  <Operation Name="文件" Gesture="F">
    <Operation Name="新建" Gesture="N">
      <Operation Name="项目" Gesture="Control + P"/>
      <Operation Name="网站" Gesture="Control + W"/>
      <Operation Name="文档" Gesture="Control + D"/>
    </Operation>
    <Operation Name="保存" Gesture="S"/>
    <Operation Name="打印" Gesture="P"/>
    <Operation Name="退出" Gesture="X"/>
  </Operation>
  <Operation Name="编辑" Gesture="E">
    <Operation Name="拷贝" Gesture="Control + C"/>
    <Operation Name="剪切" Gesture="Control + X"/>
    <Operation Name="粘贴" Gesture="Control + S"/>
  </Operation>
</Data>

<Window x:Class="工具栏功能的样式.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <!--数据源-->
        <XmlDataProvider x:Key="Ds" Source="Data.xml" XPath="Data/Operation"/>
        <!--Operation模板-->
        <HierarchicalDataTemplate DataType="Operation" ItemsSource="{Binding XPath=Operation}">
            <StackPanel Orientation="Horizontal">
                <TextBlock Text="{Binding XPath=@Name}" Margin="10,0"/>
                <TextBlock Text="{Binding XPath=@Gesture}"/>
            </StackPanel>
        </HierarchicalDataTemplate>
    </Window.Resources>
    <StackPanel>
        <Menu ItemsSource="{Binding Source={StaticResource Ds}}"></Menu>
    </StackPanel>
</Window>