类似baidu google分页器效果的代码（修改于 kwklover 同学基础上）

补充：基于JSON的ajax无刷新分页已经做好，请查阅 http://www.cnblogs.com/zhouzhaokun/archive/2011/08/24/2151866.html

今天本来要做基于json的Ajax分页效果。一大早起来就上园子找菜来吃。。刚好看到 kwklover 同学缩写的 分页器 实现。原文地址：http://www.cnblogs.com/kwklover/archive/2006/04/21/381832.html 我在他的基础上做了些修改，但是仍然不是非常完善！代码如下：

//http://www.cnblogs.com/kwklover/archive/2006/04/21/381832.html
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request["page"] == null || Request["page"] == "")
                BuildPager(10000, 1, 10);
            else
                BuildPager(10000, Convert.ToInt32(Request["page"]), 10);
        }
        /// <summary>
        /// 创建并显示分页器
        /// </summary>
        /// <param name="totalRecords">总页数</param>
        /// <param name="currentPage">当前页码</param>
        /// <param name="pageSize">页面大小</param>
        private void BuildPager(int totalRecords, int currentPage, int pageSize)
        {
            int alter = 4;
            int startPage = 1;
            int endPage = currentPage + alter;
            int totalPages = this.CalculateTotalPages(totalRecords, pageSize);

            if (currentPage > alter)
            {
                startPage = currentPage - alter;
            }

            if (endPage > totalPages)
            {
                endPage = totalPages;
            }

            string strTemp = @"<a title='{0}' href='Default.aspx?page={1}'>{2}</a>  ";
            StringBuilder sb = new StringBuilder("");
            if (currentPage != startPage)
            {
                if (currentPage > startPage)
                {
                    sb.Append(string.Format(strTemp, 1, 1, "首页"));
                    sb.Append(string.Format(strTemp, currentPage - 1, currentPage - 1, "上一页"));
                }
            }

            for (int i = startPage; i <= endPage; i++)
            {
                if (currentPage == i)
                {
                    sb.Append("<font color=red>" + i + "</font>  ");
                }
                else
                {
                    sb.Append(string.Format(strTemp, i, i, "[" + i + "]"));
                }
            }

            if (currentPage != endPage)
            {
                sb.Append(string.Format(strTemp, currentPage + 1, currentPage + 1, "下一页"));
                sb.Append(string.Format(strTemp, totalPages, totalPages, "尾页"));
            }

            this.ltlShowPager.Text = sb.ToString();
        }

        /**/
        /// <summary>
        /// 计算总页数
        /// </summary>
        /// <param name="totalRecords">总记录数</param>
        /// <param name="pageSize">每页记录数</param>
        private int CalculateTotalPages(int totalRecords, int pageSize)
        {
            int totalPagesAvailable;

            totalPagesAvailable = totalRecords / pageSize;

            //由于C#的整形除法 会把所有余数舍入为0，所以需要判断是否需要加1
            if ((totalRecords % pageSize) > 0)
                totalPagesAvailable++;

            return totalPagesAvailable;
        }

先贴上分页器代码。稍后我会上传 基于json 的ajax 分页。。。高手勿喷，:-)。。。欢迎交流