public static int GetPageNum(int recordcount, int pagesize) {
   int num = 0;
   if (pagesize == 0)
    return 0;
   if (recordcount % pagesize == 0)
    num = recordcount / pagesize;
   else
    num = Convert.ToInt32(Math.Round(Convert.ToDouble(recordcount / pagesize) , 0 )) + 1;
   return num;
  }

  /// <summary>
  /// 获取显示分页的字符串
  /// </summary>
  /// <param name="curPage">当前页</param>
  /// <param name="pages">总页数</param>
  /// <param name="link">链接地址</param>
  /// <param name="maxNum">每次显示的最多分页数字数</param>
  /// <returns></returns>
  public static string GetPagingString(int curPage ,int recordcount , int pageSize, int pages, string link , int maxNum) {
   if (pages == 0)
    return "";
   string strPre = "" , strNext = "" , strNums = "";
   //确保当前页在最大页面以内
   if (curPage < 1)
    curPage = 1;
   else if (curPage > pages)
    curPage = pages;
   if (pages == 1) {
    return "";
   }
   else  if (curPage > 1 && curPage < pages ){
    strPre = "<a href=\"" + string.Format(link, curPage - 1) + "\">上一页</a>";
    strNext = "<a href=\"" + string.Format(link, curPage + 1) + "\">下一页</a>";
   }
   else if (curPage <= 1) {
    strPre = "上一页";
    strNext = "<a href=\"" + string.Format(link, curPage + 1) + "\">下一页</a>";
   }
   else if( curPage >= pages ) {
    strPre = "<a href=\"" + string.Format(link, curPage - 1) + "\">上一页</a>";
    strNext = "下一页";
   }
   int startNum = 0 ,endNum = 0;
   if (pages <= maxNum) {  //如果总页数不大于每次最大显示的分页数
    startNum = 1;
    endNum = pages;
   }
   else if (curPage < maxNum) {　　//总页数大于
    startNum = 1;
    endNum = maxNum;
   }
   else if (curPage >= maxNum && curPage <= pages) {
    if (curPage % maxNum == 0)  //为每次最大分页数的整数倍时
     startNum += curPage - maxNum + 1;
    else
     startNum = curPage - (curPage % maxNum) + 1;
    endNum = startNum + maxNum - 1;
    if (endNum > pages)  //如果结束数字比总页数还大，则取总页数
     endNum = pages;
   }
            
   for (int i = startNum; i <= endNum; i++) {
    if (i == curPage)
     strNums += "&nbsp;<b>第" + i + "页</b>&nbsp;";
    else
     strNums += "<a href=\"" + string.Format(link, i) + "\">" + i + "</a>&nbsp;";
   }
   if( startNum > 1 )
    strNums += " ... ";

   return "<div id=\"pagelist\">共" + recordcount + "条 每页" + pageSize + "条 " + curPage + "/" + pages + "  "  + strPre + "&nbsp;" + strNums + "&nbsp;" + strNext + "</div>";
  }