小白写的一个ASP.NET分页控件，仅供娱乐

无聊，第一次写博客，自己动手写了一个分页控件。由于我是新手，有很多地方写得不够好，希望各位大牛多多指正。哈哈哈

  1 /// <summary>
  2     /// 分页控件
  3     /// </summary>
  4     public class Pager
  5     {
  6         /// <summary>
  7         /// 每页记录行数参数名称
  8         /// </summary>
  9         public string PageSizeName { get; set; }
 10         /// <summary>
 11         /// 分页当前索引页参数名称
 12         /// </summary>
 13         public string PageIndexName { get; set; }
 14 
 15         /// <summary>
 16         /// 每页记录行数
 17         /// </summary>
 18         public int PageSize { get; private set; }
 19         /// <summary>
 20         /// 分页当前索引页
 21         /// </summary>
 22         public int PageIndex { get; private set; }
 23         /// <summary>
 24         /// 总记录行数
 25         /// </summary>
 26         public int TotalCount { get; private set; }
 27         /// <summary>
 28         /// 分页摁钮最大显示数量
 29         /// </summary>
 30         public int MaxDisplayCount { get; set; }
 31 
 32         /// <summary>
 33         /// 是否显示上一页摁钮
 34         /// </summary>
 35         public bool ShowPrevPage { get; set; }
 36         /// <summary>
 37         /// 是否显示下一页摁钮
 38         /// </summary>
 39         public bool ShowNextPage { get; set; }
 40         /// <summary>
 41         /// 是否显示第一页摁钮
 42         /// </summary>
 43         public bool ShowFirstPage { get; set; }
 44         /// <summary>
 45         /// 是否显示最后一页摁钮
 46         /// </summary>
 47         public bool ShowLastPage { get; set; }
 48 
 49         /// <summary>
 50         /// 上一页摁钮显示文本
 51         /// </summary>
 52         public string PrevPageText { get; set; }
 53         /// <summary>
 54         /// 下一页摁钮显示文本
 55         /// </summary>
 56         public string NextPageText { get; set; }
 57         /// <summary>
 58         /// 第一页摁钮显示文本
 59         /// </summary>
 60         public string FirstPageText { get; set; }
 61         /// <summary>
 62         /// 最后一页摁钮显示文本
 63         /// </summary>
 64         public string LastPageText { get; set; }
 65 
 66         /// <summary>
 67         /// 上一页摁钮样式
 68         /// </summary>
 69         public string PrevPageClass { get; set; }
 70         /// <summary>
 71         /// 下一页摁钮样式
 72         /// </summary>
 73         public string NextPageClass { get; set; }
 74         /// <summary>
 75         /// 第一页摁钮样式
 76         /// </summary>
 77         public string FirstPageClass { get; set; }
 78         /// <summary>
 79         /// 最后一页摁钮样式
 80         /// </summary>
 81         public string LastPageClass { get; set; }
 82 
 83         /// <summary>
 84         /// 普通分页摁钮样式
 85         /// </summary>
 86         public string ANormalClass { get; set; }
 87         /// <summary>
 88         /// 选中分页摁钮样式
 89         /// </summary>
 90         public string ACurrentClass { get; set; }
 91 
 92         /// <summary>
 93         /// 分页控件构造函数
 94         /// </summary>
 95         /// <param name="PageIndex">当前选中页索引</param>
 96         /// <param name="PageSize">每页显示记录行数</param>
 97         /// <param name="TotalCount">总记录行数</param>
 98         /// <param name="UrlAndQuery">分页控件回传地址</param>
 99         public Pager(int PageIndex, int PageSize, int TotalCount)
100         {
101             this.PageSize = PageSize;
102             this.PageIndex = PageIndex;
103             this.TotalCount = TotalCount;
104             this.MaxDisplayCount = 10;
105 
106             this.PageSizeName = "PageSize";
107             this.PageIndexName = "PageIndex";
108             this.ACurrentClass = "current";
109 
110             this.ShowPrevPage = true;
111             this.ShowNextPage = true;
112             this.ShowFirstPage = true;
113             this.ShowLastPage = true;
114 
115             this.PrevPageText = "<";
116             this.NextPageText = ">";
117             this.FirstPageText = "|<";
118             this.LastPageText = ">|";
119         }
120 
121         /// <summary>
122         /// 生成分页控件Html代码段
123         /// </summary>
124         /// <returns></returns>
125         public string GeneratePagerHtml()
126         {
127             // 解析Url，对分页索引键值进行特殊处理
128             var request = HttpContext.Current.Request;
129             var keys = request.QueryString.AllKeys;
130             var paramList = new List<string>();
131             if (keys.HasItem())
132             {
133                 foreach (var key in keys)
134                 {
135                     if (key == PageIndexName)
136                     {
137                         continue;
138                     }
139                     var value = HttpUtility.UrlEncode(request.QueryString[key]);
140                     paramList.Add(string.Format("{0}={1}", key, value));
141                 }
142             }
143             paramList.Add(string.Format("{0}=", PageIndexName));
144             var query = paramList.Join("&");
145 
146             // 对分页摁钮显示的数量和范围做处理
147             var PageCount = (int)Math.Ceiling((double)TotalCount / PageSize);
148             var startPage = PageIndex - MaxDisplayCount / 2 + 1;
149             startPage = startPage < 1 ? 1 : startPage;
150             var endPage = startPage + MaxDisplayCount - 1;
151             endPage = endPage > PageCount ? PageCount : endPage;
152             startPage = endPage - MaxDisplayCount + 1;
153             startPage = startPage < 1 ? 1 : startPage;
154 
155             var a = "<a href="?{0}{1}" class="{2}">{3}</a>";
156             var aString = new StringBuilder();
157             for (var nowPage = startPage; nowPage <= endPage; ++nowPage)
158             {
159                 var nowAClass = nowPage == PageIndex ? ACurrentClass : ANormalClass;
160                 aString.AppendFormat(a, query, nowPage, nowAClass, nowPage);
161             }
162 
163             // 对上一页摁钮做处理
164             string PrevPage = null;
165             if (ShowPrevPage)
166             {
167                 var PrevPageIndex = PageIndex - 1;
168                 PrevPageIndex = PrevPageIndex < 1 ? 1 : PrevPageIndex;
169                 PrevPage = string.Format(a, query, PrevPageIndex, PrevPageClass, PrevPageText);
170             }
171 
172             // 对下一页摁钮做处理
173             string NextPage = null;
174             if (ShowNextPage)
175             {
176                 var NextPageIndex = PageIndex + 1;
177                 NextPageIndex = NextPageIndex > PageCount ? PageCount : NextPageIndex;
178                 NextPage = string.Format(a, query, NextPageIndex, NextPageClass, NextPageText);
179             }
180 
181             // 对第一页摁钮做处理
182             string FirstPage = null;
183             if (ShowFirstPage)
184             {
185                 FirstPage = string.Format(a, query, 1, FirstPageClass, FirstPageText);
186             }
187 
188             // 对最后一页摁钮做处理
189             string LastPage = null;
190             if (ShowLastPage)
191             {
192                 LastPage = string.Format(a, query, PageCount, LastPageClass, LastPageText);
193             }
194 
195             // 分页控件Html代码段
196             var htmlTemp = "<div>{0}{1}{2}{3}{4}</div><div>第 {5}/{6} 页，{7} 条/页，共 {8} 条记录</div>";
197             var PagerHtml = string.Format(htmlTemp, FirstPage, PrevPage, aString, NextPage, LastPage, PageIndex, PageCount, PageSize, TotalCount);
198 
199             return PagerHtml;
200         }
201     }

View Code

Default.aspx.cs:

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.UI;
 6 using System.Web.UI.WebControls;
 7 using AspNetPager;
 8 
 9 namespace Test5
10 {
11     public partial class _Default : System.Web.UI.Page
12     {
13         public int PageIndex
14         {
15             get 
16             {
17                 var pageIndex = 1;
18                 try
19                 {
20                     pageIndex = Convert.ToInt32(Request.QueryString["PageIndex"].ToString());
21                 }
22                 catch { }
23                 return pageIndex;
24             }
25         }
26 
27         public int PageSize
28         {
29             get
30             {
31                 var PageSize = 8;
32                 try
33                 {
34                     PageSize = Convert.ToInt32(Request.QueryString["PageSize"].ToString());
35                 }
36                 catch { }
37                 return PageSize;
38             }
39         }
40 
41         protected void Page_Load(object sender, EventArgs e)
42         {
43             var pager = new Pager(PageIndex, PageSize, 100);
44             this.Pager.InnerHtml = pager.CeneratePagerHtml();
45         }
46     }
47 }

View Code

Default.aspx:

 1 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Test5._Default" %>
 2 
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 4 <html xmlns="http://www.w3.org/1999/xhtml">
 5 <head runat="server">
 6     <title></title>
 7     <style type="text/css">
 8         .pager a
 9         {
10             color: Blue;
11             width: 40px;
12             height: 25px;
13             border: 1px solid #CCC;
14             margin: 0px 5px;
15             text-align: center;
16             line-height: 25px;
17             vertical-align: middle;
18             text-decoration: none;
19             display: inline-block;
20         }
21         .pager a:hover, .pager a.current
22         {
23             background-color: #555;
24             color: White;
25         }
26     </style>
27 </head>
28 <body>
29     <form id="form1" runat="server">
30     <div id="Pager" runat="server" class="pager">
31     </div>
32     </form>
33 </body>
34 </html>

View Code