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