无限级分类

  /// <summary>  
        /// 控件绑定父节点 
        /// </summary>  
        string lianjie = "";
        public string TreeViewBind()
        {
            DataTable dt = YHDAL.SelectChaXunQuanBuYongHu();
            DataView dv = dt.DefaultView;
            dv.RowFilter = "FuId=0";   //筛选FuId=0为顶级分类
            int id = 0;
            string zhongwenming = "";
            string bumen = "";
            int JBie = 0;
            foreach (DataRowView drv in dv)
            {
                id = int.Parse(drv["id"].ToString());
                JBie = int.Parse(drv["JiBie"].ToString());
                zhongwenming = drv["ZhongWenMing"].ToString();
                bumen = drv["BuMenMingChen"].ToString();
                lianjie += "<div CLASS='JiBie"+JBie+"'>(id：" + id + ")" + bumen + "<a  href='YongHuZhuCe.aspx?F=" + id + "'>" + zhongwenming + "</a><a href='YongHuZhuCe.aspx?YHID=" + id + "&LX=1'>修改</a><a href='YongHuZhuCe.aspx?YHID=" + id + "&LX=2'>删除</a></div>";
                AddReplies(dv, id);
            }
            dt.Clear();
            return lianjie;
        }

        /// <summary>  
        /// 递归绑定子节点  
        /// </summary>  
        /// <param name="dv"></param>  
        /// <param name="node"></param>  
        public void AddReplies(DataView dv, int node)
        {
            dv.RowFilter = "FuId='" + node + "'";
            int id = 0;
            string zhongwenming = "";
            string bumen = "";
            int JBie = 0;
            foreach (DataRowView row in dv)
            {

                JBie = int.Parse(row["JiBie"].ToString());
                id = int.Parse(row["id"].ToString());
                zhongwenming = row["ZhongWenMing"].ToString();
                bumen = row["BuMenMingChen"].ToString();
                lianjie += "<div CLASS='JiBie" +JBie+ "'>(id：" + id + ")" + bumen + "<a  href='YongHuZhuCe.aspx?F=" + id + "'>" + zhongwenming + "</a><a href='YongHuZhuCe.aspx?YHID=" + id + "&LX=1'>修改</a><a href='YongHuZhuCe.aspx?YHID=" + id + "&LX=2'>删除</a></div></br>";
                AddReplies(dv, id);
            }
        }