发布于 2016-06-02 13:24:09 | 78 次阅读 | 评论: 0 | 来源: 网友投递

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ASP.NET

ASP.NET 是.NET FrameWork的一部分,是一项微软公司的技术,是一种使嵌入网页中的脚本可由因特网服务器执行的服务器端脚本技术,它可以在通过HTTP请求文档时再在Web服务器上动态创建它们。 指 Active Server Pages(动态服务器页面) ,运行于 IIS(Internet Information Server 服务,是Windows开发的Web服务器)之中的程序 。


asp.net下Datalist使用数字分页的实现代码,需要的朋友可以参考下。
 
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test(Datalist数字分页).aspx.cs" Inherits="Test_Datalist数字分页_" %> 
<!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>无标题页</title> 
<link href="CSS/CSS.css" rel="stylesheet" type="text/css" /> 
</head> 
<body> 
<form id="form1" runat="server"> 
<div> 
<asp:DataList ID="DataList1" runat="server"> 
<ItemTemplate> 
<asp:Label ID="Label1" runat="server" Text='<%# Eval("mid") %>'></asp:Label> 
</ItemTemplate> 
</asp:DataList> 
</div> 
<br /> 
<div id="PageInfo" runat="server" class="LPageBar"></div> 
</form> 
</body> 
</html> 

CS代码:
 
using System; 
using System.Collections; 
using System.Configuration; 
using System.Data; 
using System.Linq; 
using System.Web; 
using System.Web.Security; 
using System.Web.UI; 
using System.Web.UI.HtmlControls; 
using System.Web.UI.WebControls; 
using System.Web.UI.WebControls.WebParts; 
using System.Xml.Linq; 
public partial class Test_Datalist数字分页_ : System.Web.UI.Page 
{ 
protected void Page_Load(object sender, EventArgs e) 
{ 
//ComFunction cf = new ComFunction(); 
//DataSet ds = cf.DataBind("M_dizhi"); 
//this.PageInfo.InnerHtml = PageNums.GetPageNum(ds, DataList1, 12); 
this.PageInfo.InnerHtml = PageNums.GetPageSql("M_dizhi", DataList1, 12); 
} 
} 

PageNums.cs
 
using System; 
using System.Data; 
using System.Configuration; 
using System.Web; 
using System.Web.Security; 
using System.Web.UI; 
using System.Web.UI.HtmlControls; 
using System.Web.UI.WebControls; 
using System.Web.UI.WebControls.WebParts; 
using System.Data.SqlClient; 
/// <summary> 
///PageNums 的摘要说明 
/// </summary> 
public class PageNums 
{ 
/// </summary> 
/// <param name="ds">DataSet实例</param> 
/// <param name="datalistname">DataList名称</param> 
/// <param name="pagesize">分页大小</param> 
public static string GetPageNum(DataSet ds, DataList datalistname, int pagesize) 
{ 
PagedDataSource objPds = new PagedDataSource(); 
objPds.DataSource = ds.Tables[0].DefaultView; 
objPds.AllowPaging = true; 
int total = ds.Tables[0].Rows.Count; 
objPds.PageSize = pagesize; 
int page; 
if (HttpContext.Current.Request.QueryString["page"] != null) 
page = Convert.ToInt32(HttpContext.Current.Request.QueryString["page"]); 
else 
page = 1; 
objPds.CurrentPageIndex = page - 1; 
datalistname.DataSource = objPds; 
datalistname.DataBind(); 
int allpage = 0; 
int next = 0; 
int pre = 0; 
int startcount = 0; 
int endcount = 0; 
string pagestr = ""; 
if (page < 1) { page = 1; } 
//计算总页数 
if (pagesize != 0) 
{ 
allpage = (total / pagesize);//计算总页数 
allpage = ((total % pagesize) != 0 ? allpage + 1 : allpage); 
allpage = (allpage == 0 ? 1 : allpage); 
} 
next = page + 1; 
pre = page - 1; 
startcount = (page + 5) > allpage ? allpage - 9 : page - 4;//中间页起始序号 
//中间页终止序号 
endcount = page < 5 ? 10 : page + 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 
pagestr = "共" + allpage + "页"; 
pagestr += page > 1 ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=1\">首页</a>;<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + pre + "\">上一页</a>" : "首页 上一页"; 
//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++) 
{ 
pagestr += page == i ? "<font color=\"#ff0000\">" + i + "</font>" : "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "\">" + i + "</a>"; 
} 
pagestr += page != allpage ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + next + "\">下一页</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + allpage + "\">末页</a>" : " 下一页 末页"; 
return pagestr; 
} 

public static string GetPageSql(string FileName, DataList datalistname, int pagesize) 
{ 
int page; 
int allpage = 0; 
int next = 0; 
int pre = 0; 
int startcount = 0; 
int endcount = 0; 
string pagestr = ""; 
if (HttpContext.Current.Request.QueryString["page"] != null) 
page = Convert.ToInt32(HttpContext.Current.Request.QueryString["page"]); 
else 
page = 1; 
if (page < 1) { page = 1; } 
DataSet ds = DataBindSql("EXEC pagesql '*',' FROM " + FileName + " '," + pagesize + "," + page, FileName); 
datalistname.DataSource = ds; 
datalistname.DataBind(); 
int total = DataBind(FileName); 
//计算总页数 
if (pagesize != 0) 
{ 
allpage = (total / pagesize);//计算总页数 
allpage = ((total % pagesize) != 0 ? allpage + 1 : allpage); 
allpage = (allpage == 0 ? 1 : allpage); 
} 
next = page + 1; 
pre = page - 1; 
startcount = page / 5 * 5;//中间页起始序号 
//中间页终止序号 
endcount = startcount+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 
pagestr = "<a>"+page + "/" + allpage + "页</a>"; 
pagestr += page > 1 ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=1\">首页</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + pre + "\">上一页</a>" : "首页 上一页"; 
//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++) 
{ 
pagestr += page == i ? "<font color=\"#ff0000\">" + i + "</font>" : "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "\">" + i + "</a>"; 
} 
pagestr += page != allpage ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + next + "\">下一页</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + allpage + "\">末页</a>" : " 下一页 末页"; 
return pagestr; 
} 
private static int DataBind(string FileName) 
{ 
string sql = "select * from " + FileName; 
DbConnection dc = new DbConnection(); 
SqlConnection mycon = new SqlConnection(dc.ConnectionString); 
SqlDataAdapter mypter = new SqlDataAdapter(sql, mycon); 
DataSet ds = new DataSet(); 
mycon.Open(); 
mypter.Fill(ds, FileName); 
mycon.Close(); 
int total = ds.Tables[0].Rows.Count; 
return total; 
} 
private static DataSet DataBindSql(string sql, string FileName) 
{ 
DbConnection dc = new DbConnection(); 
SqlConnection mycon = new SqlConnection(dc.ConnectionString); 
SqlDataAdapter mypter = new SqlDataAdapter(sql,mycon); 
DataSet ds = new DataSet(); 
mycon.Open(); 
mypter.Fill(ds, FileName); 
mycon.Close(); 
return ds; 
} 
} 

存储过程pagesql
 
CREATE PROCEDURE pagesql 
@sqlSelect varchar(800) --SELECT 后面 FROM 前面 的 字段 不用包含SELECT 
,@sqlFrom varchar(800) --FROM 后面 的 字段 包含FROM 
,@countPerPage int -- 每页数据行数 
,@toPage int --要转到的页码 
AS 
BEGIN 

-- 根据每页数据行数 和 要转到的页码 得到 数据起止点 
Declare @start int 
Declare @end int 
set @end = @countPerPage * @toPage 
set @start = @countPerPage * (@toPage - 1) + 1 

-- 临时表名称 可随机命名 
Declare @tmpTable varchar(10) 
SET @tmpTable ='#tmp' 
Declare @sqlStr varchar(800) 
-- 创建数据源到临时表 
SELECT @sqlStr = 'SELECT Identity(int,1,1) AS RowIndex,' 
SELECT @sqlStr = @sqlStr + rtrim(@sqlSelect) + ' INTO '+ @tmpTable 
SELECT @sqlStr = @sqlStr + rtrim(@sqlFrom) 
-- 查询临时表 得到所需要的数据 
SELECT @sqlStr = @sqlStr + ' '+'SELECT '+ rtrim(@sqlSelect) +' FROM ' + @tmpTable 
SELECT @sqlStr = @sqlStr + ' WHERE RowIndex BETWEEN ' + Convert(char,@start) + " AND " + Convert(char,@end) 
-- 删除临时表 
SELECT @sqlStr = @sqlStr + ' '+'DROP TABLE '+@tmpTable 
EXEC (@sqlStr) 

END 
GO 


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