1，最简单的树 -- 标准 JSON 数据

浏览数：40 / 时间：2015年06月09日

-----后台

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


public partial class _Default : System.Web.UI.Page
{

    protected void Page_Load(object sender, EventArgs e)
    {
    }


    public string GetzNodes()
    {
        StringBuilder sb = new StringBuilder();
        sb.Append("<script>");
        sb.Append("var zNodes =[");
        //*****************************************加入遍历代码
        for (int i = 0; i < 100; i++)
        {
            if (i > 50)
            {
                sb.Append(SetParametes(i.ToString(), "1", "b"));
            }
            else
            sb.Append(SetParametes(i.ToString(), "-1", "a"));
        }
        //********************************************************
        sb.Append("];");
        sb.Append("</script>");

        return sb.ToString();
    }

    /// <summary>
    /// 设置节点
    /// </summary>
    /// <param name="id">id</param>
    /// <param name="pid">父级id</param>
    /// <param name="name">名称</param>
    /// <param name="open">是否展开？</param>
    /// <returns>返回节点</returns>
    private string SetParametes(string id, string pid, string name,bool open=false)
    {
        StringBuilder sb = new StringBuilder();
        sb.Append("{");
        sb.AppendFormat("id:{0},",id);
        sb.AppendFormat("pId:{0},",pid);
        if (open)
        {
            sb.AppendFormat("name:\"{0}\",", name);
            sb.Append("open: true");
        }
        else
        {
            sb.AppendFormat("name:\"{0}\"", name);
        }
        sb.Append("},");
        return sb.ToString();
    }

}

-----前台

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

<!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>
    <link href="../css/demo_new.css" rel="stylesheet" type="text/css" />
    <link href="../css/zTreeStyle/zTreeStyle.css" rel="stylesheet" type="text/css" />
    <script src="../js/jquery-1.4.4.min.js" type="text/javascript"></script>
    <script src="../js/jquery.ztree.core-3.5.js" type="text/javascript"></script>
    
    
    
</head>

<%=GetzNodes()%>
<script type="text/javascript">
    var setting = { data: { simpleData: { enable: true} }, callback: { onClick: zTreeOnClick} };
        $(document).ready(function () {
        $.fn.zTree.init($("#treeDemo"), setting, zNodes);
    });

    //显示div
    function showdiv() {
        $("#zhezhao").fadeIn(300);
        $("#treeDemodiv").fadeIn(300);
    }
    //隐藏div
    function closediv() {
        $("#zhezhao").fadeOut(300);
        $("#treeDemodiv").fadeOut(300);
    }

    //展示zTree
    function showZTree() {
        var w = document.documentElement.clientWidth;
        var h = document.documentElement.clientHeight;
        var l = document.documentElement.clientWidth / 2 - $("#treeDemodiv").width() / 2;
        var t = document.documentElement.clientHeight / 2 - $("#treeDemodiv").height() / 2;
        $("#zhezhao").css({ "width": w + "px", "height": h + "px", "filter": "alpha(opacity=25)", "-moz-opacity": "0.25", "-khtml-opacity": "0.25", "opacity": "0.25" });
        $("#treeDemodiv").css({ "left": l + "px", "top": t + "px" });
        showdiv();
    }

    //点击触发事件
    function zTreeOnClick(event, treeId, treeNode) {
        alert(treeNode.id + "," + treeNode.name);
        closediv();
    }
</script>

<body>
    <form id="form1" runat="server">
    
             <input type="button" value="显示" onclick="showZTree()">

            <!------------------Treediv--------------------->
            <div id="treeDemodiv" style="top:0px;left:0px;padding:0px;display:none;margin:0px;;height:470px;width:230px;;position:fixed;z-index:100" class="zTreeDemoBackground left">        
                <ul style="padding:0px;margin:0px;background:#3498DB;height:20px;top:0px;left:0px;"><li style="height:20px;float:right;padding:0px;margin:0px;"><img style="width:19px;;height:19px;z-index:100;cursor:pointer" onclick="$(‘#treeDemodiv‘).fadeOut(300);$(‘#zhezhao‘).fadeOut(300);" src="../img/yzfalse.png" /></li></ul>
                <ul id="treeDemo" style="padding:0px;margin:0px;height:448px;width:228px;z-index:100;background:#fff" class="ztree"></ul>
            </div>
            <div id="zhezhao" style="top:0px;left:0px;display:none;filter:alpha(opacity=25);-moz-opacity:0.25;-khtml-opacity: 0.25;opacity: 0.25;position:fixed;background:#000;z-index:9"></div>
            <!------------------Treediv--------------------->

          
    </form>
</body>
</html>