树状图 无限级 递归
要做一个活的导航

代码如下：
  string myTree = "{";

 JLUserBLL bll = new JLUserBLL();

            DataTable table = bll.PassValue();

            DataView dv = new DataView(table);

            string loginUser = this.loginUser.username;
            var list = bll.GetMenu(loginUser);
            string tree = "";
            foreach (var item in list)
            {
                dv.RowFilter = "id=" + item.ChannelId + "";

                tree = TreeDataBind(dv);
            }
            tree = tree.Substring(0, tree.Length - 1);
            tree += "}"; 


  public string TreeDataBind(DataView dv)
        {

            foreach (DataRowView drv in dv)
            {
             
                myTree += "["; //创建一个新的节点
                //为新的借点设置属性 
                myTree += drv["DeptName"].ToString() + ",";
                myTree += drv["ParentId"].ToString() + ",";
                myTree += drv["id"].ToString() + ",";
                myTree += drv["DeptLevel"].ToString();
                myTree += "],";
                //过滤数据视图 父类id = 上一级的tid
                dv.RowFilter = "id=" + drv["ParentId"].ToString();
                //自己调用自己 
                de.Add(dement);

                TreeDataBind(dv);
            }
            de