自定义分页控件UI，从Discuz截取，配合SQL自定义分页存储过程一起使用

        public static string Pagination(int recordcount, int pagesize, int currentpage, string url)
        {
            int allcurrentpage = 0;
            int next = 0;
            int pre = 0;
            int startcount = 0;
            int endcount = 0;
            string currentpagestr = "";

            if (currentpage < 1)
              { currentpage = 1; }

            //计算总页数
            if (pagesize != 0)
            {
                allcurrentpage = (recordcount / pagesize); //计算页数
                allcurrentpage = ((recordcount % pagesize) != 0 ? allcurrentpage + 1 : allcurrentpage);
                allcurrentpage = (allcurrentpage == 0 ? 1 : allcurrentpage);
            }
            next = currentpage + 1;
            pre = currentpage - 1;
            startcount = (currentpage + 5) > allcurrentpage ? allcurrentpage - 9 : currentpage - 4;//中间页起始序号
            //中间页终止序号
            endcount = currentpage < 5 ? 10 : currentpage + 5;
            if (startcount < 1) { startcount = 1; } //为了避免输出的时候产生负数，设置如果小于1就从序号1开始
            if (allcurrentpage < endcount) { endcount = allcurrentpage; }//页码+5的可能性就会产生最终输出序号大于总页码，那么就要将其控制在页码数之内
            currentpagestr = "共" + allcurrentpage + "页      ";

            currentpagestr += currentpage > 1 ? "<a href=\"" + url + "currentpage=1\">首页</a>  <a href=\"" + url + "currentpage=" + pre + "\">上一页</a>" : "首页上一页";
            //中间页处理，这个增加时间复杂度，减小空间复杂度
            for (int i = startcount; i <= endcount; i++)
            {
                currentpagestr += currentpage == i ? "  <font color=\"#ff0000\">" + i + "</font>" : "  <a href=\"" + url + "currentpage=" + i + "\">" + i + "</a>";
            }
            currentpagestr += currentpage != allcurrentpage ? "  <a href=\"" + url + "currentpage=" + next + "\">下一页</a>  <a href=\"" + url + "currentpage=" + allcurrentpage + "\">末页</a>" : " 下一页末页";
            // PageLink = currentpagestr;
            return currentpagestr;

}

效果示意图