asp.net 通用分页显示辅助类(改进版)

/// <summary>
/// 表格对齐枚举
/// </summary>
public enum TbAlignEnum
{
Left = 1,

Center = 2,

Right = 3
}

/// <summary>
/// 分页模式
/// </summary>
public enum PagerModoule
{
/// <summary>
/// 普通分页模式
/// </summary>
Normal = 1,

/// <summary>
/// 统计分页模式
/// </summary>
Statistics = 2
}

/// <summary>
/// 分页实用类
/// </summary>
public sealed class AspNetPager
{
#region common

private const string defaultAlign = "center";//默认对齐方式
private const string leftAlign = "left";
private const string rightAlign = "right";

/// <summary>
/// 获取页数
/// </summary>
/// <param name="objs">总记录数</param>
/// <param name="recordCountPerPage">每页记录数</param>
/// <returns></returns>
public static int GetPageCout(object[] objs, int recordCountPerPage)
{
return (int)Math.Ceiling(((double)objs.Length / (double)recordCountPerPage));
}

/// <summary>
/// 获取页数
/// </summary>
/// <param name="totalCount">总记录数</param>
/// <param name="recordCountPerPage">每页记录数</param>
/// <returns></returns>
public static int GetPageCout(int totalCount, int recordCountPerPage)
{
int result = 0;
if (totalCount % recordCountPerPage == 0)
{
result = totalCount / recordCountPerPage;
}
else
{
result = totalCount / recordCountPerPage + 1;
}
return result;
}

#endregion

#region render pager

/// <summary>
/// 写分页页码(没有表格)
/// </summary>
/// <param name="pagerMode"></param>
/// <param name="response"></param>
/// <param name="baseString"></param>
/// <param name="totalCount">总记录数</param>
/// <param name="nowPage">当前页数</param>
/// <param name="recordCountPerPage">每页记录数</param>
public static void RenderPager(PagerModoule pagerMode, HttpResponse response, int totalCount, int nowPage, int recordCountPerPage, string baseString)
{
int pageCount = GetPageCout(totalCount, recordCountPerPage);
string pagerString = string.Empty;
if (pageCount > 0)
{
switch (pagerMode)
{
case PagerModoule.Normal:
pagerString = CreateLinkUrl(baseString, pageCount, nowPage, recordCountPerPage);
break;
case PagerModoule.Statistics:
pagerString = CreateStatisticLinkUrl(baseString, totalCount, pageCount, nowPage, recordCountPerPage);
break;
default:
pagerString = CreateLinkUrl(baseString, pageCount, nowPage, recordCountPerPage);
break;
}
response.Write(pagerString);
}
}

/// <summary>
/// 写分页页码(有表格)
/// </summary>
/// <param name="pagerMode"></param>
/// <param name="alignEnum"></param>
/// <param name="response"></param>
/// <param name="baseString"></param>
/// <param name="totalCount">总记录数</param>
/// <param name="nowPage">当前页数</param>
/// <param name="recordCountPerPage">每页记录数</param>
public static void RenderTablePager(PagerModoule pagerMode, TbAlignEnum alignEnum, HttpResponse response, int totalCount, int nowPage, int recordCountPerPage, string baseString)
{
int pageCount = GetPageCout(totalCount, recordCountPerPage);
if (pageCount > 0)
{
string align = string.Empty;
switch (alignEnum)
{
case TbAlignEnum.Left:
align = leftAlign;
break;
case TbAlignEnum.Center:
align = defaultAlign;
break;
case TbAlignEnum.Right:
align = rightAlign;
break;
default:
align = defaultAlign;
break;
}
StringBuilder sbTable = new StringBuilder();
sbTable.AppendFormat("<table><tr align='{0}'><td>", align);
string pagerString = string.Empty;
switch (pagerMode)
{
case PagerModoule.Normal:
pagerString = CreateLinkUrl(baseString, pageCount, nowPage, recordCountPerPage);
break;
case PagerModoule.Statistics:
pagerString = CreateStatisticLinkUrl(baseString, totalCount, pageCount, nowPage, recordCountPerPage);
break;
default:
pagerString = CreateLinkUrl(baseString, pageCount, nowPage, recordCountPerPage);
break;
}
sbTable.Append(pagerString);
sbTable.Append("</td></tr></table>");
response.Write(sbTable.ToString());
}
}

#endregion

#region create link

/// <summary>
/// 生成分页字符串(显示页数和每页记录数相关)
/// </summary>
/// <param name="baseString"></param>
/// <param name="pageCount">页数</param>
/// <param name="nowPage">当前页数</param>
/// <param name="recordCountPerPage">每页记录数(推荐记录数：10)</param>
/// <returns></returns>
private static string CreateLinkUrl(string baseString, int pageCount, int nowPage, int recordCountPerPage)
{
StringBuilder sb = new StringBuilder();
int from, to;
if (nowPage - recordCountPerPage > 0)
{
from = nowPage - recordCountPerPage;
}
else
from = 1;
if (pageCount == 0)
pageCount = 1;
if (pageCount - nowPage - recordCountPerPage > 0)
{
to = nowPage + recordCountPerPage;
}
else
to = pageCount;

if (baseString.IndexOf("?") == -1)
baseString += "?";
else
baseString += "&";
sb.Append(string.Format("<a href=\"{0}pageIndex=1\" >首页</a>", baseString));
if (pageCount > 1 && nowPage > 1)
{
sb.AppendFormat("<a href=\"{0}pageIndex={1}\" >上一页</a>", baseString, (nowPage - 1).ToString());
}
else
{
sb.Append("<a href='javascript:void(0);' style='color:gray;' >上一页</a>");
}
for (int i = from; i <= to; i++)
{
if (i == nowPage)
{
sb.AppendFormat("&nbsp;<a href='javascript:void(0);' style='color:red;' >{0}</a>", nowPage.ToString());
}
else
{
sb.AppendFormat("&nbsp;<a href=\"{0}pageIndex={1}\" >{1}</a>", baseString, i);
}
}
if (pageCount > 1 && nowPage < pageCount)
{
sb.AppendFormat("<a href=\"{0}pageIndex={1}\" >下一页</a>", baseString, (nowPage + 1).ToString());
}
else
{
sb.Append("<a href=\"javascript:void(0);\" style='color:gray;' >下一页</a>");
}
sb.Append(string.Format("&nbsp;<a href={0}pageIndex={1} >尾页</a>", baseString, pageCount));
return sb.ToString();
}

/// <summary>
/// 生成含统计信息的分页字符串(显示页数和每页记录数相关)
/// </summary>
/// <param name="baseString"></param>
/// <param name="totalCount">总记录数</param>
/// <param name="pageCount">页数</param>
/// <param name="nowPage">当前页数</param>
/// <param name="recordCountPerPage">每页记录数(推荐记录数：10)</param>
/// <returns></returns>
private static string CreateStatisticLinkUrl(string baseString, int totalCount, int pageCount, int nowPage, int recordCountPerPage)
{
StringBuilder sb = new StringBuilder();
string numricPager = CreateLinkUrl(baseString, pageCount, nowPage, recordCountPerPage);//普通数字分页
sb.AppendFormat("总共<span style='color:red;'>{0}</span>条记录,共<span style='color:red;'>{1}</span>页,当前第<span style='color:red;'>{2}</span>页&nbsp;&nbsp;",
totalCount, pageCount, nowPage);
sb.Append(numricPager);
return sb.ToString();
}

#endregion
}

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Pager.aspx.cs" Inherits="WebTest.Pager" %>

<%@ Import Namespace=" DotNet.Common.WebForm" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>aspnet简单分页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<%DotNet.Common.WebForm.AspNetPager.RenderTablePager(PagerModoule.Normal, TbAlignEnum.Right, Response, 93, 10, 10, "Pager.aspx"); %>
</div>
</form>
</body>
</html>