public void Paging(DataSet ds, int pagesize)
        {
            PagedDataSource pds = new PagedDataSource(); //创建分页对象
            pds.DataSource = ds.Tables[0].DefaultView; //绑定分页数据
            pds.AllowPaging = true; //开启分页
            int pagerowsize = pagesize;//每页显示几行
            int datarocount = this.ds.Tables[0].Rows.Count; // 数据集中共有多少行
            int totalpage = pds.PageCount;//总页数
            int pagedqindex = pds.CurrentPageIndex;//当前页索引
            int pagepor = pagedqindex - 1;//上一页
            int pageext = pagedqindex + 1;//下一页
            int strat = 0;
           
            if (Request.QueryString["page"] != null) //判断请求页面的参数是否为空，为空则表示当前还没分过页
            {
                pds.CurrentPageIndex = Convert.ToInt32(Request.QueryString["page"]);
                strat = Convert.ToInt32(Request.QueryString["page"]) / 5 * 5;
                end = strat + 5;
            }
            else
            {
                    end = 5;
            }
            for (int i = strat; i <=end; i++)
            {
                if (i == totalpage)
                {
                    break;
                }
                this.kje_con_fylb.InnerHtml += "<span class=\"kje_con_fyin\"><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "\">" + i + "</a> </span>";
            }
            kje_con_fylb.InnerHtml += "<span class=\"kje_con_fyin\">共" + totalpage + "页</span>";
            this.DataList1.DataSource = pds;
            this.DataList1.DataBind();