好用的ASP.NET 分页类 简单好用 支持 AJAX 自定义文字

在做网站没用 JS UI控件时 很实用

用法：

            var ps=new PageString();

            /*可选参数*/

            ps.SetIsEnglish = true;// 是否是英文       (默认：false)
            ps.SetIsShowText = true;//是否显示分页文字 (默认：true)
            //ps.TextFormat=""                         (默认值：《span class="pagetext"》《strong》总共《/strong》:{0} 条 《strong》当前《/strong》:{1}/{2}《/span》)
            //ps.SetPageIndexName  Request["pageIndex"](默认值："pageIndex")
            ps.SetIsAjax = false;//                    (默认值："false")

            /*函数参数*/
            int total = 10000;
            int pageSize = 10;
            int pageIndex = Convert.ToInt32(Request["pageIndex"]);

            var page = ps.ToString(total, pageSize, pageIndex, "/UI/PageStringTest.aspx?");

            //获取 page html 输出
           Response.Write(page);

　　

效果：

代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace SyntacticSugar
{
    /// <summary>
    /// ** 描述：分页类
    /// ** 创始时间：2015-5-29
    /// ** 修改时间：-
    /// ** 作者：sunkaixuan
    public class PageString
    {
        /// <summary>
        /// 是否是英文      (默认：false)
        /// </summary>
        public bool SetIsEnglish { get; set; }
        /// <summary>
        /// 是否显示分页文字(默认：true)
        /// </summary>
        public bool SetIsShowText { get; set; }
        /// <summary>
        /// 样式            (默认:"pagination")
        /// </summary>
        public string SetClassName { get; set; }
        /// <summary>
        /// 分页参数名      (默认:"pageIndex")
        /// </summary>
        public string SetPageIndexName { get; set; }
        /// <summary>
        /// 是否是异步 同步 href='' 异步 onclick=ajaxPage()    (默认:false)
        /// </summary>
        public bool SetIsAjax { get; set; }

        /// <summary>
        /// 自定义文字
        /// string.Format("{0}{1}{2}","总记录数","当前页数","总页数")
        /// 默认值：《span class="pagetext"》《strong》总共《/strong》:{0} 条 《strong》当前《/strong》:{1}/{2}《/span》
        /// </summary>
        public string SetTextFormat { get; set; }

        public PageString()
        {
            SetIsEnglish = false;
            SetIsShowText = true;
            SetTextFormat = "<span class="pagetext"><strong>总共</strong>:{0} 条 <strong>当前</strong>:{1}/{2}</span> ";
            SetClassName = "pagination";
            SetPageIndexName = "pageIndex";
            SetIsAjax = false;
        }

        /*免费的样式 
        .pagination .click {cursor:pointer}
        .pagination a{text-decoration: none;border: 1px solid #AAE;color: #15B;font-size: 13px;border-radius: 2px;}
        .pagination span{ color:#666;font-size:13px;display: inline-block;border: 1px solid #ccc;padding: 0.2em 0.6em;}
        .pagination span.pagetext{ border:none}
        .pagination a:hover{background: #26B;color: #fff;}
        .pagination a{display: inline-block;padding: 0.2em 0.6em;}
        .pagination .page_current{background: #26B;color: #fff;border: 1px solid #AAE;margin-right: 5px;}
        .pagination{margin-top: 20px;}
        .pagination .current.prev, .pagination .current.next{color: #999;border-color: #999;background: #fff;}
         * */

        /// <summary>
        /// 分页算法＜一＞共20页 首页 上一页  1  2  3  4  5  6  7  8  9  10  下一页  末页 
        /// </summary>
        /// <param name="total">总记录数</param>
        /// <param name="pageSize">每页记录数</param>
        /// <param name="pageIndex">当前页数</param>
        /// <param name="query_string">Url参数</param>
        /// <returns></returns>
        public string ToString(int total, int pageSize, int pageIndex, string query_string)
        {

            int allpage = 0;
            int next = 0;
            int pre = 0;
            int startcount = 0;
            int endcount = 0;
            StringBuilder pagestr = new StringBuilder();
            pageIndex = pageIndex == 0 ? 1 : pageIndex;
            pagestr.AppendFormat("<div class="{0}" >", SetClassName);
            if (pageIndex < 1) { pageIndex = 1; }
            //计算总页数
            if (pageSize != 0)
            {
                allpage = (total / pageSize);
                allpage = ((total % pageSize) != 0 ? allpage + 1 : allpage);
                allpage = (allpage == 0 ? 1 : allpage);
            }
            next = pageIndex + 1;
            pre = pageIndex - 1;
            startcount = (pageIndex + 5) > allpage ? allpage - 9 : pageIndex - 4;//中间页起始序号
            //中间页终止序号
            endcount = pageIndex < 5 ? 10 : pageIndex + 5;
            if (startcount < 1) { startcount = 1; } //为了避免输出的时候产生负数，设置如果小于1就从序号1开始
            if (allpage < endcount) { endcount = allpage; }//页码+5的可能性就会产生最终输出序号大于总页码，那么就要将其控制在页码数之内

            bool isFirst = pageIndex == 1;
            bool isLast = pageIndex == allpage;

            if (SetIsShowText)
                pagestr.AppendFormat(SetTextFormat, total, pageIndex, allpage);

            if (isFirst)
            {
                pagestr.Append("<span>首页</span> <span>上一页</span>");
            }
            else
            {
                pagestr.AppendFormat("<a href="{0}pageIndex=1">首页</a>  <a href="{0}pageIndex={1}">上一页</a>", query_string, pre);
            }
            //中间页处理，这个增加时间复杂度，减小空间复杂度
            for (int i = startcount; i <= endcount; i++)
            {
                bool isCurent = pageIndex == i;
                if (isCurent)
                {
                    pagestr.Append("  <a class="page_current">" + i + "</a>");
                }
                else
                {
                    pagestr.Append("   <a href="" + query_string + "pageIndex=" + i + "">" + i + "</a>");
                }

            }
            if (isLast)
            {
                pagestr.Append("<span>下一页</span> <span>末页</span>");
            }
            else
            {
                pagestr.Append("  <a  href="" + query_string + "pageIndex=" + next + "">下一页</a>  <a href="" + query_string + "pageIndex=" + allpage + "">末页</a>");
            }
            pagestr.AppendFormat("</div>");
            return ConversionData(pagestr.ToString());
        }

        private string ConversionData(string page)
        {
            if (SetIsEnglish)
            {
                page= page.Replace("上一页", "Previous").Replace("下一页", "Next").Replace("总共", "total").Replace("当前", "Current").Replace("条", "records").Replace("首页", "First").Replace("末页", "Last");
            }
            if (SetIsAjax)
            {
                var matches = Regex.Matches(page, @"href="".*?""",RegexOptions.Singleline);
                if (matches != null && matches.Count > 0)
                {
                    foreach (Match m in matches)
                    {
                        page = page.Replace(m.Value, string.Format("class="click" onclick="ajaxPage('{0}')"", Regex.Match(m.Value, string.Format(@"{0}=(d+)", SetPageIndexName)).Groups[1].Value));
                    }
                }
            }
            return page;

        }

    }

}