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c# asp.net 实现分页(pager)功能
分页PagerHelper辅助类
using System;
using System.Web;
public class PagerHelper{ #region 获取分页的Html代码 /// <summary> /// 获取分页的Html代码 /// 当前页码方法内部根据Request["page"]获取 /// </summary> /// <param name="pageSize">每一页数量</param> /// <param name="totalCount">总数量</param> /// <param name="url">伪静态地址如/news/list-1-{0}.html</param> /// <param name="maxPageNum">最多显示的页码个数（100页 每次只显示8个其他隐藏）</param> /// <returns></returns> public static string GetPageHtml(int pageSize, int totalCount, string url, int maxPageNum = 8) { HttpRequest Request = HttpContext.Current.Request; int curPageIndex = 1; if (!string.IsNullOrWhiteSpace(Request["page"])) { curPageIndex = Convert.ToInt32(Request["page"] ?? "1"); curPageIndex = curPageIndex <= 0 ? 1 : curPageIndex; } System.Text.StringBuilder pageHtml = new System.Text.StringBuilder(); //if (pageIndex > 1) //{ pageHtml.Append(curPageIndex == 1 ? "<a href=http://www.mamicode.com/"javascript:void(0);\">首页</a>" : "<a href=http://www.mamicode.com/"" + string.Format(url, 1) + "\">首页</a>"); pageHtml.Append(curPageIndex > 1 ? "<a href=http://www.mamicode.com/"" + string.Format(url, curPageIndex - 1) + "\">上一页</a>" : "<a href=http://www.mamicode.com/"javascript:void(0);\">上一页</a>"); //} int pageCount = GetPageCount(pageSize, totalCount);//总页码 //获取显示区域第一个开始位置 如 1 9 17 int firstNum = curPageIndex % maxPageNum == 0 ? curPageIndex - (maxPageNum - 1) : curPageIndex - curPageIndex % maxPageNum + 1; if (firstNum > maxPageNum) { pageHtml.Append("<a href=http://www.mamicode.com/"" + string.Format(url, firstNum - 1) + "\">...</a>"); } for (int i = firstNum; i < firstNum + maxPageNum; i++) { if (i > pageCount) break; string css = string.Empty; if (i == curPageIndex) { css = "class=\"currentpage\""; } pageHtml.Append("<a " + css + " href=http://www.mamicode.com/"" + string.Format(url, i) + "\">" + i + "</a>"); } if (pageCount >= firstNum + maxPageNum) { pageHtml.Append("<a href=http://www.mamicode.com/"" + string.Format(url, firstNum + maxPageNum) + "\">...</a>"); } //if (pageCount > curPageIndex) //{ pageHtml.Append(curPageIndex < pageCount ? "<a href=http://www.mamicode.com/"" + string.Format(url, curPageIndex + 1) + "\">下一页</a>" : "<a href=http://www.mamicode.com/"javascript:void(0);\">下一页</a>"); pageHtml.Append("<a href=http://www.mamicode.com/"" + string.Format(url, pageCount) + "\">尾页</a>"); //} pageHtml.Append(string.Format("<a href=http://www.mamicode.com/"javascript:void(0);\">共{0}页,{1}条</a>", pageCount, totalCount)); return pageHtml.ToString(); } #endregion #region 获取页码总数 /// <summary> /// 获取页码总数 /// </summary> /// <param name="pageSize">每一页 数量</param> /// <param name="totalCount">总数量</param> /// <returns></returns> private static int GetPageCount(int pageSize, int totalCount) { int pageNumbers = 0; if (totalCount % pageSize != 0) { pageNumbers = totalCount / pageSize + 1; } else { pageNumbers = totalCount / pageSize; } pageNumbers = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(totalCount) / Convert.ToDouble(pageSize))); return pageNumbers; } #endregion}前台使用
<%@ Page Language="C#" AutoEventWireup="true" %><!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <style> html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, code, del, dfn, em, img, q, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, i { margin: 0; padding: 0; border: 0; font-weight: inherit; font-style: inherit; font-size: 100%; font-family: inherit; vertical-align: baseline; } body { background: #fff; font: 12px/1.5 Tahoma; color: #000; } a { text-decoration: none; cursor: pointer; } /*分页*/ .page { clear: both; text-align: center; margin-top: 10px; margin-bottom: 20px; } .page a { border: 1px solid #dbdbdb; background: #fff; padding: 5px 10px; margin: 1px; display: inline-block; color: #000; } .page a:hover { text-decoration: none; background-color: #2196F3; color: #fff; } .page span a { border: 1px solid #1f5b13; background: #fff; padding: 2px 7px; margin: 1px; display: inline-block; color: #104c00; } .page span a:hover { text-decoration: none; background-color: #a3c79c; } .page .currentpage { background-color: #ff8800; color: #fff; } </style></head><body> <form id="form1" runat="server"> <div class="page"> <asp:Literal runat="server" ID="ltHtml"></asp:Literal> </div> </form> <script runat="server"> protected void Page_Load(object sender, EventArgs e) { ltHtml.Text = PagerHelper.GetPageHtml(3, 33, "/tpager_demo.aspx?page={0}"); } </script></body></html>预览图
c# asp.net 实现分页(pager)功能
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