分页公共类

PageBarHelper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CZBK.ItcastProject.Common
{
    public class PageBarHelper
    {
        public static string GetPageaBar(int pageIndex, int pageCount)
        {
            if (pageCount==1)
            {
                return string.Empty;
            }
            int star = pageIndex - 5;//计算起始位置，要求页面上显示10个数字页码。
            if (star<1)
            {
                star = 1;
            }
            int end = star + 9;//计算终止位置
            if (end>pageCount)
            {
                end = pageCount;
                //重新计算一下star的值
                star = end - 9 < 1 ? 1 : end - 9;
            }
            StringBuilder sb = new StringBuilder();
            if (pageIndex > 1)
            {
                sb.AppendFormat("<a href='NewList.aspx?pageIndex={0}'>上一页</a>", pageIndex - 1);
            }
            for (int i = star; i <= end; i++)
            {
                if (i==pageIndex)
                {
                    sb.Append(i);
                }
                else
                {
                    sb.AppendFormat("<a href='NewList.aspx?pageIndex={0}'>{0}</a>",i);
                }
            }
            if (pageIndex < pageCount)
            {
                sb.AppendFormat("<a href='NewList.aspx?pageIndex={0}'>下一页</a>", pageIndex + 1);
            }
            return sb.ToString();
        }
    }
}

页面引入样式pageBarStyle.css

.page_nav{clear:both; padding:15px 0; color:#666; font:normal 12px/24px Arial; text-align:center;}
.page_nav a{display:inline-block; height:22px; margin:0 2px; padding:0 8px; text-decoration:none; border:solid 1px #dbe5ee; -moz-border-radius:2px; -webkit-border-radius:2px; -khtml-border-radius:2px; border-radius:2px; background:#fff; color:#333; font:normal 12px/22px Arial, Helvetica, sans-serif; cursor:pointer;}
.page_nav strong{display:inline-block; height:24px; margin:0 3px; padding:0 8px; border:none; -moz-border-radius:2px; -webkit-border-radius:2px; -khtml-border-radius:2px; border-radius:2px; background:#C00; color:#fff; font-weight:normal; line-height:24px; text-decoration:none;}
.page_nav a:hover,
.page_nav a.on{height:24px; margin:0 3px; border:none; background:#C00; color:#fff; line-height:24px; text-decoration:none;}
.page_nav a.select{cursor:default;}
.page_nav .view_all{display:block; text-align:center;}
.page_nav .view_all a{height:auto; margin:0; padding:0; border:none; color:#06c; line-height:24px;}
.page_nav .view_all a:hover{height:auto; margin:0; padding:0; background:none;}

后台代码

using CZBK.ItcastProject.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace CZBK.ItcastProject.WebApp._2015_5_30
{
    public partial class NewList : System.Web.UI.Page
    {
        public string StrHtnl { get; set; }
        public int pageIndex { get; set; }
        public int pageCount { get; set; }
        protected void Page_Load(object sender, EventArgs e)
        {
            int pageSize = 10;
            pageIndex = Convert.ToInt32(Request.QueryString["pageIndex"]) == 0 ? 1 : Convert.ToInt32(Request.QueryString["pageindex"]);
            BLL.UserInfoService userinfoservice = new BLL.UserInfoService();
            pageCount = userinfoservice.GetPageCount(pageSize);//获取总页数
            pageIndex = pageIndex < 1 ? 1 : pageIndex;
            pageIndex = pageIndex > pageCount ? pageCount : pageIndex;
            List<UserInfo> list = userinfoservice.GetPageList(pageIndex, pageSize);//分页数据
            StringBuilder sb = new StringBuilder();
            foreach (UserInfo userinfo in list)
            {
                if (userinfo!=null)
                {
                    sb.AppendFormat("<li><span>{0}</span><a href='#'>{1}</a></li>",userinfo.RegTime.ToShortDateString(),userinfo.UserName);
                }
            }
            StrHtnl = sb.ToString();
        }
    }
}

DAL层代码

/// <summary>
        /// 根据指定的范围，获取指定的数据
        /// </summary>
        /// <param name="start"></param>
        /// <param name="end"></param>
        /// <returns></returns>
        public List<UserInfo> GetPageList(int start,int end)
        {
            string sql = "SELECT * FROM (SELECT *,ROW_NUMBER() OVER (ORDER BY id) AS num FROM dbo.UserInfo) AS t WHERE t.num>= @start and num <=@end";
            SqlParameter[] pars ={
                                new SqlParameter("@start",SqlDbType.Int,4),
                                new SqlParameter("@end",SqlDbType.Int,4)
                                };
            pars[0].Value = start;
            pars[1].Value = end;
            DataTable da = new DataTable();
            da=SqlHelper.GetDataTable(sql, CommandType.Text, pars);
            List<UserInfo> list = null;
            if (da.Rows.Count > 0)
            {
                list = new List<UserInfo>();
                UserInfo userInfo = null;
                foreach (DataRow row in da.Rows)
                {
                    userInfo = new UserInfo();
                    LoadEntity(userInfo, row);
                    list.Add(userInfo);
                }
            }
            return list;
        }
        /// <summary>
        /// 获取总的记录数
        /// </summary>
        /// <returns></returns>
        public int GetRecordCount()
        {
            string sql = "select count(*) from UserInfo";
            return Convert.ToInt32(SqlHelper.ExecuteScalar(sql, CommandType.Text));
        }

BLL层代码

/// <summary>
        /// 计算获取数据的访问，完成分页
        /// </summary>
        /// <param name="pageIndex">当前页码</param>
        /// <param name="pageSize">每页显示的记录数据</param>
        /// <returns></returns>
        public List<UserInfo> GetPageList(int pageIndex, int pageSize)
        {
            int start = (pageIndex - 1) * pageSize + 1;
            int end = pageIndex * pageSize;
            return UserInfoDal.GetPageList(start, end);
        }
        /// <summary>
        /// 获取总的页数
        /// </summary>
        /// <param name="pageSize">每页显示的记录数</param>
        /// <returns></returns>
        public int GetPageCount(int pageSize)
        {
            int recoredCount = UserInfoDal.GetRecordCount();//获取总的记录数.
            int pageCount = Convert.ToInt32(Math.Ceiling((double)recoredCount / pageSize));
            return pageCount;
        }

Model层

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CZBK.ItcastProject.Model
{
    public class UserInfo
    {
        public int Id { get; set; }
        public string UserName { get; set; }
        public string UserPass { get; set; }
        public DateTime RegTime { get; set; }
        public string Email { get; set; }
    }
}

aspx页面部分，两种不同分页方式

<div class="pages"><a href="NewList.aspx?pageIndex=1">首页</a>  |  <a href="NewList.aspx?pageIndex=<%=pageIndex-1<1?1:pageIndex-1 %>">前页</a>  |  <a href="NewList.aspx?pageIndex=<%=pageIndex+1>pageCount?pageCount:pageIndex+1 %>">后页</a> | <a href="NewList.aspx?pageIndex=<%=pageCount %>">尾页</a>         页次：<%=pageIndex %>/<%=pageCount %>页 </div>
            <hr />
                <div class="page_nav">
                    <%=PageBarHelper.GetPageaBar(pageIndex,pageCount) %>
                </div>