public string PageList(int PageSize, int RCount, int currentPage, string UrlHead, string UrlFoot)
        {
            int stepNum = 3;
            int pageRoot = 1;
            string pageStr = "";
            int PCount;

            if (RCount % PageSize == 0)
                PCount = RCount / PageSize;
            else
                PCount = RCount / PageSize + 1;

            PCount = PCount == 0 ? 1 : PCount;
            currentPage = currentPage == 0 ? 1 : currentPage;

            //pageStr = "<div class=\"pages\"><span>共计： " + RCount.ToString() + " 条记录；分页 " + currentPage.ToString() + " / " + PCount.ToString() + "</span>";
            // pageStr = " <li><a href='#'>&laquo; Prev</a></li>";

            if (currentPage - stepNum < 2)
                pageRoot = 1;
            else
                pageRoot = currentPage - stepNum;

            int pageFoot = PCount;
            if (currentPage + stepNum >= PCount)
                pageFoot = PCount;
            else
                pageFoot = currentPage + stepNum;
            if (pageRoot == 1)
            {
                if (currentPage == 1)
                {
                    pageStr += "<li><a>&laquo; 首页</a></li>";
                //    pageStr += "<a>&laquo;</a>";
                }
                else
                {
                    pageStr += "<li><a href=\"" + UrlHead + "1" + UrlFoot + "\" title=\"首页\">&laquo;首页</a></li>";
                    pageStr += "<li><a href=\"" + UrlHead + (currentPage - 1).ToString() + UrlFoot + "\" title=\"上一页\">&laquo;上一页</a></li>";
                }
            }
            else
            {
                pageStr += "<li><a href=\"" + UrlHead + "1" + UrlFoot + "\" title=\"首页\">&laquo; 首页</a></li>";
                pageStr += "<li><a href=\"" + UrlHead + (currentPage - 1).ToString() + UrlFoot + "\" title=\"上一页\">&laquo; 上一页</a></li><li class='disabled'><a>...</a></li>";
            }
            for (int i = pageRoot; i <= pageFoot; i++)
            {
                if (i == currentPage)
                {
                    pageStr += "<li class='active'><a>" + i.ToString() + "</a>";
                }
                else
                {
                    pageStr += "<li><a href=\"" + UrlHead + i.ToString() + UrlFoot + "\" title=\"第 " + i.ToString() + " 页\">" + i.ToString() + "</a></li>";
                }
                if (i == PCount)
                    break;
            }
            if (pageFoot == PCount)
            {
                if (PCount == currentPage)
                {
                   //pageStr += "<li><a>下一页&raquo;</a></li>";
                    pageStr += "<li><a>尾页&raquo;</a></li>";
                }
                else
                {
                    pageStr += "<li><a href=\"" + UrlHead + (currentPage + 1).ToString() + UrlFoot + "\" title=\"下一页\">下一页 &raquo;</a></li>";
                    pageStr += "<li><a href=\"" + UrlHead + PCount.ToString() + UrlFoot + "\" title=\"尾页\">尾页 &raquo;</a></li>";