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; } } }

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