private SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=test;Persist Security Info=True;User ID=sa;Password=123456");protected void Page_Load(object sender, EventArgs e){//数据显示，跟分页分开操作con.Open();DataSet ds = new DataSet();int num =0;if (string.IsNullOrWhiteSpace(Request["page"]) ||Convert.ToInt32(Request["page"])<=1){num = 0;}else{num =Convert.ToInt32(Request["page"])-1;}string sql = "select top 20 id,name,sex,age from aa where id not in (select top (20*" + num + ") id from aa order by id desc) order by id desc";SqlDataAdapter da = new SqlDataAdapter(sql, con);da.Fill(ds, "0");con.Close();GridView1.DataSource = ds.Tables[0];GridView1.DataBind();}//分页处理public string pageIndex(){int num = 0;//当前页码if (string.IsNullOrWhiteSpace(Request["page"]) || Convert.ToInt32(Request["page"]) <= 1){num = 1;}else{num = Convert.ToInt32(Request["page"]) ;}//获取到数据库里面的全部数据条数，我没用存储过程用的是sql语句，有的回说存储过程效率高。//亲 我测试数据库是432W数据//亲 我查询的是一列，//亲 最重要的一点是我不会存储过程//亲 我知道这么查效率低哦！~但是我只查一次！~StringBuilder sb = new StringBuilder();con.Open();string sql = "select count(id) from aa";SqlCommand com = new SqlCommand(sql, con);int count = Convert.ToInt32(com.ExecuteScalar());con.Close();int page = 0;//页总数page = (int)Math.Ceiling((decimal) count / 20);//int from = num / 10 * 10 + 1;//起始页int from = 0;int to = 0;

　　 　　//计算极值if (from % 10 == 0){int tmp = num - 1;from = (tmp / 10) * 10 + 1;to = tmp / 10 * 10 + 11;}else{to = num / 10 * 10 + 11;//终止页from = num / 10 * 10 + 1;}if (num != 1){sb.AppendLine("<a href='?page=" + (num - 1) + "'>上一页</a>");}else{sb.AppendLine("<strong>上一页</strong>");}for (int i = from; i < to && i < page; i++){if (i == num)sb.AppendLine("<strong>"+i+"</strong>");elsesb.AppendLine("<a href='?page=" + i  + "'>" + i + "</a>");}if (to - from >= 10){sb.AppendLine("<a href='?page=" + (from + 10) + "'>...</a>");}if (num <= page){sb.AppendLine("<a href='?page=" + (num +1) + "'>下一页</a>");}return sb.ToString();