datalist已经分页 求自动翻页代码

<webdiyer:AspNetPager ID="AspNetPager1"   runat="server" 
           FirstPageText='首页'
        LastPageText='尾页'  PagingButtonSpacing="10px" ShowPageIndexBox="Always" CustomInfoHTML="共%RecordCount%条，第%CurrentPageIndex%页 /共%PageCount% 页"
                                 NextPageText="下一页" PrevPageText ="上一页"
                                 ShowCustomInfoSection="Left"
                                 SubmitButtonText ="Go" TextAfterPageIndexBox ="页" 
            TextBeforePageIndexBox ="转到 " UrlPaging="True" 
            CustomInfoSectionWidth="20%" CustomInfoTextAlign="Center" 
            onpagechanged="AspNetPager1_PageChanged">
        </webdiyer:AspNetPager>void bind()
    {        string wh2 = "";
        DataSet da2 = st2.GetList(wh2);
        DataView dv = da2.Tables[0].DefaultView;
        PagedDataSource pds = new PagedDataSource();
        AspNetPager1.RecordCount = dv.Count;
        pds.DataSource = dv;
        pds.AllowPaging = true;
        pds.CurrentPageIndex = AspNetPager1.CurrentPageIndex - 1;
        pds.PageSize = AspNetPager1.PageSize;
        DataList2.DataSource = pds;
        DataList2.DataBind();    }
    protected void AspNetPager1_PageChanged(object sender, EventArgs e)
    {
        bind();
    }
这是分页代码 如何修改 或者给个例子 万分感谢