在树视图控件中结束xml标记

Question

我目前正在开发一个简单的xml查看器控件来显示一些具有简单导航功能的xml文件，例如在Internet Explorer中打开xml文件时。

为此，我在msdn论坛中找到了一个很好的控件：

<UserControl x:Class="WpfApplication1.CustomControl.Viewer"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:xmlstack="clr-namespace:System.Xml;assembly=System.Xml">

    <UserControl.Resources>
        <SolidColorBrush x:Key="xmlValueBrush" Color="Blue" />
        <SolidColorBrush x:Key="xmAttributeBrush" Color="Red" />
        <SolidColorBrush x:Key="xmlTagBrush" Color="DarkMagenta" />
        <SolidColorBrush x:Key="xmlMarkBrush" Color="Blue" />

        <DataTemplate x:Key="attributeTemplate">
            <StackPanel Margin="3,0,0,0"
                        HorizontalAlignment="Center"
                        Orientation="Horizontal">
                <TextBlock Foreground="{StaticResource xmAttributeBrush}" Text="{Binding Path=Name}" />
                <TextBlock Foreground="{StaticResource xmlMarkBrush}" Text="=&quot;" />
                <TextBlock Foreground="{StaticResource xmlValueBrush}" Text="{Binding Path=Value}" />
                <TextBlock Foreground="{StaticResource xmlMarkBrush}" Text="&quot;" />
            </StackPanel>
        </DataTemplate>

        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="IsExpanded" Value="True" />
        </Style>

        <HierarchicalDataTemplate x:Key="treeViewTemplate" ItemsSource="{Binding XPath=child::node()}">
            <StackPanel Margin="3,0,0,0"
                        HorizontalAlignment="Center"
                        Orientation="Horizontal">
                <TextBlock x:Name="startTag"
                           HorizontalAlignment="Center"
                           Foreground="{StaticResource xmlMarkBrush}"
                           Text="&lt;" />

                <TextBlock x:Name="xmlTag"
                           Margin="0"
                           HorizontalAlignment="Center"
                           Foreground="{StaticResource xmlTagBrush}"
                           Text="{Binding Path=Name}" />

                <ItemsControl HorizontalAlignment="Center"
                              ItemsSource="{Binding Path=Attributes}"
                              ItemTemplate="{StaticResource attributeTemplate}">
                    <ItemsControl.ItemsPanel>
                        <ItemsPanelTemplate>
                            <StackPanel Orientation="Horizontal" />
                        </ItemsPanelTemplate>
                    </ItemsControl.ItemsPanel>
                </ItemsControl>

                <TextBlock x:Name="endTag"
                           HorizontalAlignment="Center"
                           Foreground="{StaticResource xmlMarkBrush}"
                           Text="&gt;" />
            </StackPanel>

            <HierarchicalDataTemplate.Triggers>
                <DataTrigger Binding="{Binding NodeType}">
                    <DataTrigger.Value>
                        <xmlstack:XmlNodeType>Text</xmlstack:XmlNodeType>
                    </DataTrigger.Value>
                    <Setter TargetName="xmlTag" Property="Text" Value="{Binding InnerText}" />
                    <Setter TargetName="xmlTag" Property="Foreground" Value="Blue" />
                    <Setter TargetName="startTag" Property="Visibility" Value="Collapsed" />
                    <Setter TargetName="endTag" Property="Visibility" Value="Collapsed" />
                </DataTrigger>

                <DataTrigger Binding="{Binding HasChildNodes}" Value="False">
                    <Setter TargetName="endTag" Property="Text" Value=" /&gt;" />
                </DataTrigger>
            </HierarchicalDataTemplate.Triggers>
        </HierarchicalDataTemplate>
    </UserControl.Resources>

    <Grid>
        <TreeView Name="xmlTree"
                  Grid.Row="2"
                  Grid.ColumnSpan="2"
                  ItemTemplate="{StaticResource treeViewTemplate}" />
    </Grid>
</UserControl>

代码隐藏：

using System.Windows.Controls;
using System.Windows.Data;
using System.Xml;

namespace WpfApplication1.CustomControl
{
    /// <summary>
    /// Interaction logic for Viewer.xaml
    /// </summary>
    public partial class Viewer : UserControl
    {
        private XmlDocument _xmldocument;

        public Viewer()
        {
            InitializeComponent();
        }

        public XmlDocument xmlDocument
        {
            get { return _xmldocument; }
            set
            {
                _xmldocument = value;
                BindXMLDocument();
            }
        }

        private void BindXMLDocument()
        {
            if (_xmldocument == null)
            {
                xmlTree.ItemsSource = null;
                return;
            }

            XmlDataProvider provider = new XmlDataProvider();
            provider.Document = _xmldocument;
            Binding binding = new Binding();
            binding.Source = provider;
            binding.XPath = "child::node()";
            xmlTree.SetBinding(TreeView.ItemsSourceProperty, binding);
        }
    }
}

我现在的问题是我想显示子节点的结束标记，在下面标有星号的例子中：

<root>
    <node>Test*</node>*
*</root>*

我不知道如何实现这一点，有什么好建议吗？

提前谢谢。