DTCMS自定义标签：获取所有栏目

   /// <summary>
        /// 返回所有类别
        /// </summary>
        /// <returns></returns>
        protected DataTable get_category()
        {
            BLL.channel bll = new BLL.channel();
            return bll.GetList(0, "", "  sort_id desc").Tables[0];
        }

   <%set DataTable categorylist=get_category()%>
      <%loop category categorylist%>
      <a href="{category[name]}/{category[name]}_index.html">{category[title]}</a>
      <%/loop%>