分页代码（显示单个页码和页面跳转）

//_url为跳转到下一页的Url,pageIndex为响应的页码，pageCount为计算后的总页数

// count为列表的总记录数，从数据库查询得到，下面语句用来计算总页数

 if (count > 0)
              pageCount = count / pageSize + (count % pageSize != 0 ? 1 : 0);

 public static string _GetNavBarSelectHtml(string _url, int pageIndex, int pageCount)
        {
            if (pageCount <= 1)
                return string.Empty;
            pageIndex = pageIndex + 1;
            // 计算显示页码
            int x = pageIndex / 9;
            if (pageIndex % 9 == 0) --x;
            int startPage = (x * 9) + 1;
            int endPage = Math.Min(pageCount, startPage + 8);
            // 生成换页代码
            System.Text.StringBuilder sb = new StringBuilder();

            string url = _url;
            if (string.IsNullOrEmpty(url))
                return string.Empty;
            if (url.Contains("{0}"))
                url = string.Format(url, "&Page={1}");
            else if (!url.Contains("?"))
                url = _url + "?Page={1}";
            else
                url = _url + "&Page={1}";
            url = "<a href = \"" + url + "\">{0}</a>";
            sb.Append("<ul>");
            sb.Append(" <li>页面显示</li>");
            //上一页
            if (pageIndex == 1)
            {
                sb.Append("<li>");
                sb.Append("<a> <img src='/Images/com_gallery/pic_28.jpg' /><a>");
                sb.Append("</li>");
            }
            else
            {
                sb.Append("<li>");
                sb.AppendLine(String.Format(url, "  <img src='/Images/com_gallery/pic_28.jpg' />", pageIndex - 1));
                sb.Append("</li>");
            }
            sb.Append("<li>");
            if (startPage > 1)
                sb.Append(String.Format(url, "...", pageIndex - 1));
            sb.Append("</li>");
            for (int i = startPage; i <= endPage; i++)
            {
                if (i != pageIndex)
                {
                    sb.Append("<li>");
                    sb.Append(String.Format(url, "[" + i + "]", i));
                    sb.Append("</li>");
                }
                else
                {
                    sb.Append("<li class='select'>");
                    sb.Append(string.Format("<a>[{0}]</a>", i));
                    sb.Append("</li>");
                }
            }

           if (pageCount > endPage)
            {
                sb.Append("<li>");
                sb.Append(String.Format(url, "...", endPage + 1));
                sb.Append("</li>");
            }

            //下一页
            if (pageIndex == pageCount)
            {
                sb.Append("<li>");
                sb.Append("<a><img src='/Images/com_gallery/pic_30.jpg' /></a>");
                sb.Append("</li>");
            }
            else
            {                
                sb.Append("<li >");
                sb.Append(String.Format(url, "<img src='/Images/com_gallery/pic_30.jpg' />", pageIndex + 1));
                sb.Append("</li>");
            }
         
            sb.Append(" <li>");
            sb.Append(" <div align=\"right\">");
            sb.Append("&nbsp;到第");
            sb.Append("<input  name='inputpagenum' style='width:35px' type='text'/>");
            sb.Append("页&nbsp;</div>");
            sb.Append("</li><li>");

            sb.Append("<img onclick=\"jumpPage('" + pageCount + "')\"  src=\"Template/default/images/login_01.jpg\" /></li>");
            sb.Append("</ul>");

            return sb.ToString();
        }