这里用javascript 方法实现了TreeView的checkbox选中的效果：
1：选中父节点的时候，其子节点将自动选中；
2：若父节点不选中，其子节点也全部选中；
2：若其中一个子节点uncheck的时候，其父节点的状态就不选中。
该方法在IE7 和firefox下均可执行：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page </title>
<script type="text/javascript" language="javascript">
function client_OnTreeNodeChecked(evt){
var obj = getCurrentNode(evt);
var treeNodeFound = false;
var checkedState;
if (obj.tagName == "INPUT" && obj.type == "checkbox" ){
checkedState = obj.checked;
<
<form id="form1" runat="server">
<div>
<script type="text/javascript">
function oo(a){
document.getEleme ......
var english = {"A","B","C","D","E","F","G","H","I","J","K","L","M",&qu ......
