首先应用JS文件和样式文件

    <script src="../JavaScript/ZTree/jquery-ztree-2.2.min.js" type="text/javascript"></script>

   <link href="../JavaScript/ZTree/zTreeStyle/zTreeIcons.css" rel="stylesheet" type="text/css" />
    <link href="../JavaScript/ZTree/zTreeStyle/zTreeStyle.css" rel="stylesheet" type="text/css" />

 其次：json值绑定

var treeData;
            $.ajax({
                    type: "Get",   //请求的方法
                    url: '',//要传递参数使用Ajax进行处理的类名称
                    dataType: "text",   //返回的数据类型
                    global: false,  //Ajax的范围
                    async: false,   //异步执行
                    //成功情况下的处理
                    success: function (strReult) {

                       treeData=eval(strReult);
                    }, //失败情况下的处理
                    error: function () {
                        alert("Ajax请求数据失败!");
                    }
                  });
        
                 var setting = {
                       
                showLine: true,
                checkable: false,
                       };
          
            zTree = $("#ulUserTree").zTree(setting, treeData);
    

后台处理json处理；数据库中查出的数据集放在DataTable 中传入如下方法返回json数据

        //json处理
        #region
        /// <summary>
        /// 表格数据生成指定格式的json数据
        /// </summary>
        /// <param name="dt">生成json数据的报表</param>
        /// <returns></returns>
        public static string DtToJson(DataTable dt)
        {
            string result = string.Empty;

            foreach (DataRow dr in dt.Select("parentid=0"))
            {
                result += "," + AppendJson(dr, dt);

            }
            if (result.Length > 0)
                result = "[\r\n" + result.Substring(1) + "\r\n]";
            return result;
        }
        /// <summary>
        /// 生成指定的Json数据
        /// </summary>
        /// <param name="dr">报表行对象</param>
        /// <param name="dtAll">报表对象</param>
        /// <returns></returns>
        private static string AppendJson(DataRow dr, DataTable dtAll)
        {
            string parentNode = string.Empty;
            string isTrue = "false";
            DataRow[] rows = dtAll.Select("parentid='" + dr["VALUE"].ToString().Trim() + "'");
            if (rows.Length == 0)
            {

                parentNode = "\r\n{name:{name},icon:\"{icon}\",open:" + isTrue + ", checked:false, id:\"{id}\"" + "\r\n}";
                parentNode = parentNode.Replace("{name}", dr["name"].ToString())
                    .Replace("{id}", dr["VALUE"].ToString()).Replace("{icon}", dr["icon"].ToString());
            }
            else
            {
                string result = string.Empty;

                foreach (DataRow row in rows)
                {
                    result += "," + AppendJson(row, dtAll);

                }


                if (result.Length > 0)
                    result = "[\r\n" + result.Substring(1) + "\r\n]";
                parentNode = "\r\n{name:{name},icon:\"{icon}\",open:" + isTrue + ", checked:false, id:\"{id}\",nodes:" + result + "\r\n}";
                parentNode = parentNode.Replace("{name}", dr["name"].ToString())
                    .Replace("{id}", dr["VALUE"].ToString()).Replace("{icon}", dr["icon"].ToString());
            }
            return parentNode;
        }
        #endregion