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:

 

XAML部分代码:

< 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

C#代码

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);
        }