最近做个项目 用webpart+ajaxPro 做个JS下拉刷新新闻列表 我写了用AJAXPRO先写了个asp.net项目可以实现刷新但放到WEBPART后方法就出现未定义了 请各位大大看看！

这个是前台调用

<script type="text/javascript">

        function ChangeContent(op, str) {
            var strTitle =IndexNewsWebPartUserControl.AjaxBind(str).value;
            document.getElementById("<%=label2.ClientID %>").innerHTML = strTitle;
            var divTopNews = document.getElementById("div1");
            var divContent = op.innerHTML;
            if (divContent.length > 6) {
                divTopNews.innerHTML = divContent.substring(0, 7) + "...";
            } else {
                divTopNews.innerHTML = divContent;
            }
            HiddenChildCor();
        }

    </script>

这里是后台声明的地方

namespace VisualWebPartProject.IndexNewsWebPart
{
    public partial class IndexNewsWebPartUserControl : UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                AjaxPro.Utility.RegisterTypeForAjax(typeof(IndexNewsWebPartUserControl));
               }
        }

}

webConfig 和DLL我都加过了