Silverlight使用反射实现TreeView动态导航

最近在试验用Silverlight做应用系统,效果如下:

<controls:TreeView x:Name="tv" Margin="8,50,0,8" HorizontalAlignment="Left" Width="102" FontSize="13.333" Background="#FFFAFAFA">
            <controls:TreeViewItem Header="日志" Selected="OnSelected" Tag="UcLog" >
            </controls:TreeViewItem>
            <controls:TreeViewItem Header="用户" Selected="OnSelected" Tag="UcUser">
            </controls:TreeViewItem>
            <controls:TreeViewItem Header="组" Selected="OnSelected" Tag="UcGroup">
            </controls:TreeViewItem>
        <controls:TreeViewItem Header="权限" Selected="OnSelected" Tag="UcPermission">
            </controls:TreeViewItem>
        <controls:TreeViewItem Header="应用程序" Selected="OnSelected" Tag="UcApplication">
            </controls:TreeViewItem>
        </controls:TreeView>

     <controlsToolkit:DockPanel x:Name="dp" Margin="114,50,8,8"/>

 TreeView的ItemsSource可以通过xml文件或WebService动态绑定

 Selected事件都指向OnSelected方法,Tag为所要导航到的xaml页面名称

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

using System.Reflection;

namespace UGP_SilverlightApp
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void OnSelected(object sender, RoutedEventArgs e)
        {
            TreeViewItem tvi=(TreeViewItem)sender;
            if (tvi.Tag != null)
            {
                DockPanelAddChildren(dp, (tvi.Tag.ToString()));
            }
        }

        void DockPanelAddChildren(DockPanel dp, string formname)
        {
            Assembly ass = Assembly.GetExecutingAssembly();
            UIElement value = (UIElement)ass.CreateInstance("UGP_SilverlightApp." + formname);
            dp.Children.Clear();
            dp.Children.Add(value);
        }