< body MS_POSITIONING = " GridLayout " >
         < form id = " Form1 "  method = " post "  runat = " server " >
             < FONT face = " 宋体 " >< INPUT id = " TB_CFYJ "   type = " text "     name = " TB_CFYJ " >< INPUT  type = " button "  value = " Button "  onclick = " window.open('WebForm1.aspx', '', ''); " ></ FONT >
         </ form >
     </ body >

<% @ Page language = " c# "  Codebehind = " WebForm1.aspx.cs "  AutoEventWireup = " false "  Inherits = " test.WebForm1 "   %>
<% @ Register TagPrefix = " iewc "  Namespace = " Microsoft.Web.UI.WebControls "  Assembly = " Microsoft.Web.UI.WebControls, Version=1.0.2.226, Culture=neutral, PublicKeyToken=31bf3856ad364e35 "   %>
<! DOCTYPE HTML PUBLIC  " -//W3C//DTD HTML 4.0 Transitional//EN "   >
< HTML >
     < HEAD >
         < title > WebForm1 </ title >
         < meta content = " JavaScript "  name = " vs_defaultClientScript " >
         < meta content = " http://schemas.microsoft.com/intellisense/ie5 "  name = " vs_targetSchema " >
         < script >
        function GetAttribute() // 没用
         { alert(TreeView1.getTreeNode(TreeView1.selectedNodeIndex).getAttribute("Text")); }
           
        function gg() // 客户端遍历（有BUG。碰上折起来的结点就会出错）
         {
            var AllRootNode=new Array();
            AllRootNode=TreeView1.getChildren();
            AlertNode(AllRootNode);
            function AlertNode(NodeArray)
            {
                if(parseInt(NodeArray.length)==0)
                    return;
                else
                {
                    for(i=0;i<NodeArray.length;i++)
                    {
                        var cNode;
                        cNode=NodeArray[i];
                        alert(cNode.getAttribute("Text"));
                        if(parseInt(cNode.getChildren().length)!=0)
                            AlertNode(cNode.getChildren());
                    }
                }
            }
        }         
        function addCFYJ() // For Client回传值
         {
            var mys = opener.document.all("TB_CFYJ");
            mys.value=mys.value+TreeView1.getTreeNode(TreeView1.selectedNodeIndex).getAttribute("Text")
        }
        
         </ script >
     </ HEAD >
     < body MS_POSITIONING = " GridLayout " >
         < FONT face = " 宋体 " >
             < form id = " Form1 "  method = " post "  runat = " server " >
                 < INPUT type = " button "  onclick = " addCFYJ() "  value = " client方式 " > // 这里是直接用客户端方式把数据传回去
                 < iewc:treeview id = " TreeView1 "  runat = " server " ></ iewc:treeview >
                 < asp:Button id = " Button1 "  runat = " server "  Text = " 服务器重写js " ></ asp:Button ></ form >
         </ FONT >
     </ body >
</ HTML >

using  System;
using  System.Collections;
using  System.ComponentModel;
using  System.Data;
using  System.Drawing;
using  System.Web;
using  System.Web.SessionState;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  System.Web.UI.HtmlControls;

using  Microsoft.Web.UI.WebControls;
using  System.Data.OracleClient;

namespace  test
{
    /**//// <summary>
    /// WebForm1 的摘要说明。
    /// </summary>
    public class WebForm1 : System.Web.UI.Page
    {
        protected Microsoft.Web.UI.WebControls.TreeView TreeView1;
        protected System.Web.UI.HtmlControls.HtmlForm Form1;
        protected System.Web.UI.WebControls.Button Button1;
    
        DataSet ds;
        private void Page_Load(object sender, System.EventArgs e)
        {
            OracleConnection conn=new OracleConnection("user id=hzzfj;password=hzzfj;data source=hzzfj");
            try
            {                    
                OracleDataAdapter ad=new OracleDataAdapter("select * from  dept",conn);
                ds=new DataSet();
                ad.Fill(ds,"tree");
                InitTree(TreeView1.Nodes,"0");
            }
            catch(Exception E)
            {
            }
            finally
            {
                conn.Close();
            }
        }

        //建树的基本思路是：从根节点开始递归调用显示子树 
        private void InitTree(TreeNodeCollection Nds,string parentId) 
        { 
            DataView dv=new DataView();
            TreeNode tmpNd;
            string intId;
            dv.Table=ds.Tables["tree"];
            dv.RowFilter="PARENTID="+parentId + "" ;
            foreach(DataRowView drv in dv) 
            { 
                tmpNd=new TreeNode();
                tmpNd.ID=drv["DEPT_ID"].ToString();
                tmpNd.Text=drv["DEPT_NAME"].ToString();
                tmpNd.CheckBox=true;                
                //tmpNd.ImageUrl="../images/"+drv["Icon"].ToString();
                //tmpNd.NavigateUrl="../"+drv["Address"].ToString();
                Nds.Add(tmpNd);
                intId=drv["ParentId"].ToString();
                InitTree(tmpNd.Nodes,tmpNd.ID);
            }
        }
        
        string res="";
        private void Button1_Click(object sender, System.EventArgs e)
        {
            //Response.Write("<script> alert('"+GetAllNodeText(TreeView1.Nodes)+"')</script>");
            Response.Write("<script> var mys = opener.document.all('TB_CFYJ');mys.value='"+GetAllNodeText(TreeView1.Nodes)+"';</script>");
        }

        string GetAllNodeText(TreeNodeCollection tnc)
        {
            foreach(TreeNode node in tnc)
            {
                if(node.Nodes.Count!=0)
                    GetAllNodeText(node.Nodes);
                if (node.Checked)
                {
                    res+=node.Text + "|";
                }
                
            }
            return res;
        }
    }
}