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【Asp.Net】 asp.net权限目录树，适合网站权限设计
作者:Dezai.CN / 发布于2013/5/12/ 760

	<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MyTree.aspx.cs" Inherits="test_test_dhtmlTree" %>

	<!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></title>
	 <script src="js/jquery-1.3.2-vsdoc2.js" type="text/javascript"></script>
	</head>
	<body>
	 <form id="form1" runat="server">
	 <!--树图层开始-->
	 <div id="tvModel" onclick="postBackByObject(event)">
	 <asp:Label ID="lTree" runat="server" CssClass="treeFont"></asp:Label>
	 </div>
	 <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
	 <!--树图层结束-->
	 <script type="text/javascript">
	 function ShowChild(vlink) {
	 var vCurrent = $(vlink); //得到鼠标点击的span元素
	 var vImg = vCurrent.children("img"); //得到span的子元素图像元素
	 var vImgSrc = vImg.attr("src"); //得到图像的src;

	 var vchild = vCurrent.parent("td").parent("tr").parents("table").next("div"); //得到对应的所有子节点所在的层
	 if (vImgSrc == "images/treeImage/plus.gif")//切换图像折叠或者展开
	 {

	 vImg.attr("src", "images/treeImage/add.gif");
	 }
	 else {
	 vImg.attr("src", "images/treeImage/plus.gif");
	 }
	 vchild.toggle(); //子层显示或者隐藏
	 }
	 </script>
	 <script type="text/javascript">
	 function postBackByObject(e) { //兼容FireFox的写法，FireFox没有window.event.srcElement;
	 var o = e.target || window.event.srcElement;
	 if (o == null) {
	 return;
	 }
	 if (o.tagName == "INPUT" && o.type == "checkbox" && (o.id.indexOf("ckedit_") != -1 || o.id.indexOf("cksearch_") != -1)) //选中了设置权限的CheckBox
	 {
	 return;
	 }
	 if (o.tagName == "INPUT" && o.type == "checkbox") //点击treeview的checkbox是触发
	 {
	 var d = o.id; //获得当前checkbox的id;
	 var e = d.replace("ck_", "Nodes"); //通过查看脚本信息,获得包含所有子节点div的id
	 var div = window.document.getElementById(e); //获得div对象
	 if (div != null) //如果不为空则表示,存在自节点
	 {
	 var check = div.getElementsByTagName("INPUT"); //获得div中所有的已input开始的标记
	 for (i = 0; i < check.length; i++) {
	 if (check[i].type == "checkbox") //如果是checkbox
	 {
	 check[i].checked = o.checked; //字节点的状态和父节点的状态相同,即达到全选
	 }

	 }
	 PostParentNode(o);
	 }
	 else //点子节点的时候,使父节点的状态改变,即不为全选
	 {
	 PostParentNode(o);
	 }
	 }
	 }

	 function PostParentNode(o) {
	 var divid = o.parentElement.parentElement.parentElement.parentElement.parentElement; //子节点所在的div
	 var id = divid.id.replace("Nodes", "ck_"); //获得根节点的id
	 var vCheckBox = window.document.getElementById(id); //父CheckBox,新增递归调用 add bywfz
	 var checkbox = divid.getElementsByTagName("INPUT"); //获取所有子节点数
	 var s = 0;
	 for (i = 0; i < checkbox.length; i++) {
	 if (checkbox[i].checked) //判断有多少子节点被选中
	 {
	 s++;
	 }
	 }
	 if (s > 0) //如果全部选中 或者 选择的是另外一个根节点的子节点 ，
	 { // 则开始的根节点的状态仍然为选中状态
	 window.document.getElementById(id).checked = true;
	 if (vCheckBox.tagName == "INPUT" && vCheckBox.type == "checkbox") {
	 PostParentNode(vCheckBox); //递归调用
	 }
	 }
	 else { //否则为没选中状态
	 window.document.getElementById(id).checked = false;
	 if (vCheckBox.tagName == "INPUT" && vCheckBox.type == "checkbox") {
	 PostParentNode(vCheckBox); //递归调用
	 }
	 }
	 }
	 </script>
	 </form>
	</body>
	</html>

	

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Web;
	using System.Text;
	using System.Data;
	using System.Web.UI;
	using System.Web.UI.WebControls;

	public partial class test_test_dhtmlTree : System.Web.UI.Page
	{
	 protected void Page_Load(object sender, EventArgs e)
	 {

	 if (!Page.IsPostBack)
	 {
	 ViewState["dtTree"] = createDT();
	 ViewState["dtAction"] = createActionDT();
	 BindTree();
	 }
	 }

	 #region 绑定顶级树
	 /// <summary>
	 /// ck_开头表示树上的带CheckBox的节点，后面的参数是该节点的编号
	 /// </summary>
	 protected void BindTree()//外层树根节点
	 {
	 StringBuilder sb = new StringBuilder();

	 DataTable dt = (DataTable)ViewState["dtTree"];
	 DataRow[] drArr = dt.Select(" parent_id='0' ");

	 foreach (DataRow dr1 in drArr)
	 {
	 string name = dr1["module_name"].ToString();
	 string id = dr1["module_id"].ToString();
	 string sParent = @"<table cellpadding='0' cellspacing='0' style='border-width:0;' >
	 <tr >
	 <td >
	 <span id='sParent' style='cursor:hand' onclick='javascript:ShowChild(this)'>
	 <img src='images/treeImage/plus.gif' alt='折叠' style='border-width:0;' /></span>
	 </td>
	 <td style='white-space:nowrap;'><input type='checkbox' name='ck_" + id + "' id='ck_" + id + @"' />
	 <span id='strParent'>" + name + @"</span>
	 </td>
	 </tr>
	 </table>"; //父节点字符串;
	 sb.Append(sParent);
	 string sChild = BindChild(dt,id, 1);
	 sb.Append(sChild);
	 }//循环结束
	 this.lTree.Text = sb.ToString();
	 }
	 #endregion

	 #region 加载子节点
	 /// <summary>
	 /// 加载子节点
	 /// </summary>
	 /// <param name="parentId">父节点编号</param>
	 /// <param name="level">第几层子树，层数不同，跟页面最左侧的间隔也不同，要添加td</param>
	 /// <returns></returns>
	 protected string BindChild(DataTable dt, string parentId, int level) //产生子树
	 {
	 StringBuilder sb = new StringBuilder();
	 sb.Append("<div id='Nodes" + parentId + "' style='display:block;'>"); //层的id和父节点上的id相同，可以实现选中父节点自动选择子节点。。根据id用js实现
	 DataRow[] drArr = dt.Select(" parent_id='" + parentId + "' ");

	 foreach (DataRow dr1 in drArr)
	 {
	 string name = dr1["module_name"].ToString();
	 string id = dr1["module_id"].ToString();
	 string strBreak = "";
	 string sChild = @"
	 <table cellpadding='0' cellspacing='0' style='border-width:0;' >
	 <tr>";
	 sb.Append(sChild);
	 for (int i = 1; i <= level; i++)
	 {
	 strBreak = strBreak + "<td><div style='width:20px;height:1px'></div></td>";//不同层级间隔不同
	 }
	 sb.Append(strBreak);
	 if (HasChild(dt,id) == true) //有子节点的有折叠效果，反之没有
	 {
	 sb.Append(@"<td >
	 <span id='tvModeln0' style='cursor:hand' onclick='javascript:ShowChild(this)'>
	 <img src='images/treeImage/plus.gif' alt='折叠' style='border-width:0;' /></span>
	 </td>");
	 }
	 else
	 {
	 sb.Append(@"<td ><img src='images/treeImage/blank.gif' alt='' /></td>");
	 }
	 if (HasChild(dt, id) == true)
	 {
	 sChild = @"<td style='white-space:nowrap;'>
	 <input type='checkbox' name='ck_" + id + "' id='ck_" + id + @"' />
	 <span id='tvModelt1'>" + name + @" </span>
	 </td>
	 </tr>
	 </table>";
	 }
	 else//没有子节点的，添加代表权限选择的checkBox
	 {
	 string LoopAction = string.Empty;
	 DataRow[] drAction = ((DataTable)ViewState["dtAction"]).Select(" module_id='" + id + "' ");
	 for (int k = 0; k < drAction.Length; k++)
	 {
	 string RamID = id + k.ToString().PadLeft(4, '0');
	 LoopAction += drAction[k]["action_name"];
	 LoopAction += "<input type='checkbox' name='ckedit_" + RamID + "' id='ckedit_" + RamID + @"' value='" + id + "@" + drAction[k]["action_id"] + "' />";
	 }
	 sChild = @"<td style='white-space:nowrap;'>
	 <input type='checkbox' name='ck_" + id + "' id='ck_" + id + @"' />
	 <span id='tvModelt1'>" + name + @" </span>
	 </td>
	 <td><div style='width:40px;height:1px'></div></td>
	 <td align='right'>" + LoopAction + @"
	 </td>
	 </tr>
	 </table>";
	 }
	 sb.Append(sChild);
	 if (HasChild(dt,id) == true)
	 {

	 sb.Append(BindChild(dt,id, level + 1));
	 }
	 }
	 sb.Append("</div>");
	 return sb.ToString();
	 }
	 #endregion

	 #region 检查当前项是否有下级
	 protected bool HasChild(DataTable dt, string parentId)
	 {
	 bool blReturn = false;
	 DataRow[] drArr = dt.Select(" parent_id='" + parentId + "' ");
	 if (drArr.Length > 0)
	 {
	 blReturn = true;
	 }
	 return blReturn;
	 }
	 #endregion

	 #region 按钮事件
	 protected void Button1_Click(object sender, EventArgs e)
	 {
	 System.Collections.Specialized.NameValueCollection dic = Request.Form;
	 string[] keys = dic.AllKeys;
	 foreach (string key in keys)
	 {
	 if (key.ToUpper().IndexOf("CKEDIT_") != -1)//选中可维护节点
	 {
	 Response.Write("key:" + key + "&nbsp;&nbsp;" + "value:" + Request.Form[key] + "<br/>");
	 }
	 }
	 }
	 #endregion

	 #region 创建数据
	 protected DataTable createDT()
	 {
	 DataTable dt = new DataTable();
	 dt.Columns.Add("module_id");
	 dt.Columns.Add("module_name");
	 dt.Columns.Add("parent_id");
	 dt.Columns.Add("module_url");
	 dt.Columns.Add("module_order");

	 dt.Rows.Add("M01", "广东", "0", "", "1");

	 dt.Rows.Add("M0101", "深圳", "M01", "", "100");
	 dt.Rows.Add("M010101", "南山区", "M0101", "", "1000");
	 dt.Rows.Add("M010102", "罗湖区", "M0101", "", "1001");
	 dt.Rows.Add("M010103", "福田区", "M0101", "", "1002");
	 dt.Rows.Add("M010104", "宝安区", "M0101", "", "1003");
	 dt.Rows.Add("M010105", "龙岗区", "M0101", "", "1004");

	 dt.Rows.Add("M0102", "广州", "M01", "", "101");
	 dt.Rows.Add("M010201", "越秀区", "M0102", "", "1105");
	 dt.Rows.Add("M010202", "海珠区", "M0102", "", "1106");
	 dt.Rows.Add("M010203", "天河区", "M0102", "", "1107");
	 dt.Rows.Add("M010204", "白云区", "M0102", "", "1108");
	 dt.Rows.Add("M010205", "黄埔区", "M0102", "", "1109");
	 dt.Rows.Add("M010206", "荔湾区", "M0102", "", "1110");
	 dt.Rows.Add("M010207", "罗岗区", "M0102", "", "1111");
	 dt.Rows.Add("M010208", "南沙区", "M0102", "", "1112");
	 return dt;
	 }

	 protected DataTable createActionDT()
	 {
	 DataTable dt = new DataTable();
	 dt.Columns.Add("action_id");
	 dt.Columns.Add("module_id");
	 dt.Columns.Add("action_name");
	 dt.Columns.Add("action_order");

	 dt.Rows.Add("a0001", "M010101", "查看", "1");
	 dt.Rows.Add("a0002", "M010101", "编辑", "2");
	 dt.Rows.Add("a0003", "M010101", "删除", "3");
	 dt.Rows.Add("a0004", "M010101", "锁定", "4");

	 dt.Rows.Add("a0005", "M010203", "查看", "5");
	 dt.Rows.Add("a0006", "M010203", "编辑", "6");
	 dt.Rows.Add("a0007", "M010203", "删除", "7");
	 dt.Rows.Add("a0008", "M010203", "锁定", "8");

	 return dt;
	 }
	 #endregion
	}
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