虽然TreeView很方便，但是不得不说，它生成的ViewState数量另人发指.....所以还请适当选择性的应用.
首先要有一个站点地图(必须放在UI层的根目录)
<? xml version="1.0" encoding="utf-8" ?> < siteMap xmlns ="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" > < siteMapNode url ="~/TreeView/Default.aspx" title ="首页" description ="" > < siteMapNode url ="http://www.baidu.com" title ="百度" description ="" > < siteMapNode url ="http://zhidao.baidu.com" title ="百度知道" description ="百度知道" ></ siteMapNode > < siteMapNode url ="http://mp3.baidu.com" title ="百度音乐" description ="百度音乐" ></ siteMapNode > < siteMapNode url ="http://news.baidu.com" title ="百度新闻" description ="百度新闻" ></ siteMapNode > </ siteMapNode > < siteMapNode url ="http://www.google.com.hk" title ="谷歌" description ="" > < siteMapNode url ="http://ditu.google.com" title ="谷歌地图" description ="谷歌地图" ></ siteMapNode > </ siteMapNode > < siteMapNode url ="http://www.cnblogs.com" title ="博客园" description ="博客园" > < siteMapNode url ="http://zhuiyi.cnblogs.com" title ="我的博客" description ="" ></ siteMapNode > </ siteMapNode > </ siteMapNode > </ siteMap >
一个TreeView控件,并为其绑定数据源，一个按钮，并添加Click事件
< asp:TreeView ID ="TreeView1" runat ="server" DataSourceID ="SiteMapDataSource1" ImageSet ="BulletedList4" > </ asp:TreeView > < asp:SiteMapDataSource ID ="SiteMapDataSource1" runat ="server" /> < asp:Button ID ="btnAddNode" runat ="server" Text ="动态添加结点" onclick ="btnAddNode_Click" />
事件代码：
protected void btnAddNode_Click( object sender, EventArgs e) { TreeNode tn = new TreeNode(); tn.Text = " 我的博客 " ; tn.NavigateUrl = " http://zhuiyi.cnblogs.com " ; TreeNode mytreenode = TreeView1.FindNode( " 首页 " ); TreeView1.FindNode( " 首页/博客园 " ).ChildNodes.Add(tn); }