层级数据模板 案例（HierarchicalDataTemplateWindow）

1、xaml 文件

<Window x:Class="DataTemplate.HierarchicalDataTemplateWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window6" Height="268" Width="362">
    <Window.Resources>
        <!--数据源-->
        <XmlDataProvider x:Key="ds" Source="data.xml" XPath="Data/Grade"></XmlDataProvider>
        <!--年级模板-->
        <HierarchicalDataTemplate DataType="Grade" ItemsSource="{Binding XPath=Class}">
            <TextBlock Text="{Binding XPath=@Name}"></TextBlock>
        </HierarchicalDataTemplate>
        <!--班级模板-->
        <HierarchicalDataTemplate DataType="Class" ItemsSource="{Binding XPath=Group}">
            <RadioButton Content="{Binding XPath=@Name}" GroupName="gn"></RadioButton>
        </HierarchicalDataTemplate>
        <!--小组模板-->
        <HierarchicalDataTemplate DataType="Group" ItemsSource="{Binding XPath=Student}">
            <CheckBox Content="{Binding XPath=@Name}"></CheckBox>
        </HierarchicalDataTemplate>
    </Window.Resources>

    <Grid>
        <TreeView Margin="5" ItemsSource="{Binding Source={StaticResource ds}}">

        </TreeView>
    </Grid>
</Window> 

2、xaml后台代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace DataTemplate
{
    /// <summary>
    /// HierarchicalDataTemplateWindow.xaml 的交互逻辑
    /// </summary>
    public partial class HierarchicalDataTemplateWindow : Window
    {
        public HierarchicalDataTemplateWindow()
        {
            InitializeComponent();
        }
    }
}

3、xml文件：

<?xml version="1.0" encoding="utf-8" ?>
<Data xmlns="">
  <Grade Name="一年级">
    <Class Name="甲班">
      <Group Name="A组">
      </Group>
      <Group Name="B组">
      </Group>
      <Group Name="C组">
      </Group>
    </Class>
    <Class Name="乙班">
      <Group Name="A组">
      </Group>
      <Group Name="B组">
      </Group>
      <Group Name="C组">
      </Group>
    </Class>
  </Grade>
  <Grade Name="二年级">
    <Class Name="甲班">
      <Group Name="A组">
      </Group>
      <Group Name="B组">
      </Group>
      <Group Name="C组">
      </Group>
    </Class>
    <Class Name="乙班">
      <Group Name="A组">
      </Group>
      <Group Name="B组">
      </Group>
      <Group Name="C组">
      </Group>
    </Class>
  </Grade>
</Data>