使用AjaxPro

1：后台注册

protected void Page_Load(object sender, EventArgs e)
        {
            AjaxPro.Utility.RegisterTypeForAjax(typeof(SelectRoomByCommunity));
        }

2：后台方法家标识

        /// <summary>
        /// 查询置顶小区
        /// </summary>
        /// <returns></returns>
        [AjaxPro.AjaxMethod]
        public List<RoomByCommunity> GetTopRoom(string co_autoid)
        {
            List<RoomByCommunity> lis = new List<RoomByCommunity>();
            lis = new RoomService().GetTopRoom(co_autoid);

            return lis;
        }

3：前台方法调用

    //获取下一级Room
    function GetNextRom(RBC_AutoID) {
        $("#input_Return_SelectCommunity").show();
        var x = CRM.Page.crm.UserContronel.SelectRoomByCommunity.GetNextRoom(RBC_AutoID);
        $("#AreaList_SelectRoomByCommunity").html("")
        $(x.value).each(function(index, ele) {
            if (ele.RBC_IsLast == 1) {//最后一级
                var topcom = '<a   onClick=GetRoomAddress("' + ele.RBC_AutoID + '","' + ele.RBC_Name + '")>' + ele.RBC_Name + '</a>';
            } else {
                var topcom = '<a   onClick=GetNextRom("' + ele.RBC_AutoID + '")>' + ele.RBC_Name + '</a>';
            }
            $("#AreaList_SelectRoomByCommunity").html($("#AreaList_SelectRoomByCommunity").html() + topcom);
        });
        $("#AreaList_SelectRoomByCommunity").html($("#AreaList_SelectRoomByCommunity").html() + '<div class="clear"></div>');
    }

4：web.config修改

        <httpHandlers>
      <add verb="POST,GET" path="ajaxpro/*.ashx" type="AjaxPro.AjaxHandlerFactory,AjaxPro.2"/>
        </httpHandlers>

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http://www.cnblogs.com/lexus/archive/2007/11/29/977281.html