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如何取出treeview中checkbox的值

这是aspx的内容:
<%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls" %> 



  

<%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls" %>
<%@ Page language="c#"  SmartNavigation="true" Codebehind="test1.aspx.cs" AutoEventWireup="false" Inherits="tkSystem.test1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
    <HEAD>
        <title>test1</title>
        <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
        <meta content="C#" name="CODE_LANGUAGE">
        <meta content="JavaScript" name="vs_defaultClientScript">
        <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
        <script language="javascript">

//初始化选中节点
function initchecknode()
{
 var node=TreeView1.getTreeNode("1");
 node.setAttribute("Checked","true");
 setcheck(node,"true"); 
 FindCheckedFromNode(TreeView1);
}
//oncheck事件
function tree_oncheck(tree)
{
 var node=tree.getTreeNode(tree.clickedNodeIndex);
 var Pchecked=tree.getTreeNode(tree.clickedNodeIndex).getAttribute("checked");
 setcheck(node,Pchecked);
 document.all.checked.value="";
 document.all.unchecked.value="";
 FindCheckedFromNode(TreeView1);
}

//设置子节点选中
function setcheck(node,Pc)
{
 var i;
 var ChildNode=new Array();
 ChildNode=node.getChildren();
 
 if(parseInt(ChildNode.length)==0)
  return;
 else
 {
  for(i=0;i<ChildNode.length;i++)
  {
   var cNode;
   cNode=ChildNode[i];
   if(parseInt(cNode.getChildren().length)!=0)
    setcheck(cNode,Pc);
   cNode.setAttribute("Checked",Pc);
  }
 }
}
//获取所有节点状态
function FindCheckedFromNode(node) {
 var i = 0;
 var nodes = new Array();
 nodes = node.getChildren();
 
 for (i = 0; i < nodes.length; i++) {
  var cNode;
  cNode=nodes[i];
  if (cNode.getAttribute("Checked"))
   AddChecked(cNode);
  else
      AddUnChecked(cNode);
  
  if (parseInt(cNode.getChildren().length) != 0 ) {
   FindCheckedFromNode(cNode);
  }
 }
}
//添加选中节点
function AddChecked(node) {
 document.all.checked.value += node.getAttribute("NodeData");
 document.all.checked.value += ',';
 }
//添加未选中节点
function AddUnChecked(node) {
 document.all.unchecked.value += node.getAttribute("NodeData");
 document.all.unchecked.value += ',';
}

        </script>
        <script language="javascript">
  
        </script>
    </HEAD>
    <body onload="initchecknode()" MS_POSITIONING="FlowLayout">
        <form id="Form1" method="post" runat="server">
            <FONT face="宋体">
                <iewc:treeview id="TreeView1" runat="server">
                    <iewc:TreeNode NodeData="1" CheckBox="True" Text="第一章" Expanded="True"></iewc:TreeNode>
    <iewc:TreeNode NodeData="1" CheckBox="True" Text="第二章" Expanded="True"></iewc:TreeNode>
            </iewc:treeview><br>
                <P>
                    <TABLE id="Table1" cellSpacing="1" cellPadding="1" width="300" border="1">
                        <TR>
                            <TD><asp:label id="Label1" runat="server">checked</asp:label></TD>
                            <!--    <TD><INPUT id="checked" type="text" size="32"></TD>-->
                        </TR>
                        <TR>
                            <TD><asp:label id="Label2" runat="server">unchecked</asp:label></TD>
                            <TD><INPUT id="unchecked" type="text" size="32"></TD>
                        </TR>
                    </TABLE>
                    <!--<input type="button" value="set check" onclick="set_check()">-->
                    <br>
                    &nbsp;
                    <asp:Button id="Button1" runat="server" Text="submit"></asp:Button>
                                </FONT>
        </form>
        </P>
    </body>
</HTML>

 

<%@ Page language="c#" SmartNavigation="true" Codebehind="test1.aspx.cs" AutoEventWireup="false" Inherits="tkSystem.test1" %>


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.Windows.Forms;


namespace tkSystem
{
    /// <summary>
    /// test1 的摘要说明。
    /// </summary>
    public class test1 : System.Web.UI.Page
    {
        protected System.Web.UI.WebControls.Label Label1;
        protected System.Web.UI.WebControls.Label Label2;
        protected System.Web.UI.HtmlControls.HtmlInputHidden HdnSelectedValues;
    protected System.Web.UI.WebControls.Button Button1;
        protected Microsoft.Web.UI.WebControls.TreeView TreeView1;

        private void Page_Load(object sender, System.EventArgs e)
        {
            // 在此处放置用户代码以初始化页面
            if(!IsPostBack)
            {
                TreeView1.Attributes.Add("oncheck","tree_oncheck(this)");
                            }
            
            
            
        }
        
        Web 窗体设计器生成的代码

        private void Button1_Click(object sender, System.EventArgs e)
        {
            string zhangjie="";
            if(TreeView1.Nodes[0].Nodes[0].Checked)
                zhangjie+=TreeView1.Nodes[0].Nodes[0].Text.ToString()+",";
            if(TreeView1.Nodes[0].Nodes[1].Checked)
                zhangjie+=TreeView1.Nodes[0].Nodes[1].Text.ToString()+",";
            if(TreeView1.Nodes[0].Nodes[2].Checked) 
                zhangjie+=TreeView1.Nodes[0].Nodes[2].Text.ToString()+",";
            if(TreeView1.Nodes[0].Nodes[3].Checked)
                zhangjie+=TreeView1.Nodes[0].Nodes[3].Text.ToString()+",";
            if(TreeView1.Nodes[0].Nodes[4].Checked)
                zhangjie+=TreeView1.Nodes[0].Nodes[4].Text.ToString()+",";
            if(TreeView1.Nodes[0].Nodes[5].Checked)
                zhangjie+=TreeView1.Nodes[0].Nodes[5].Text.ToString();    
            if(zhagnjie!="")
            Response.Write(zhangjie);
            
        }

    



    }
}

 

 


 

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