asp.net中Datalist使用數字分頁的實現方法

來源：懂視網責編：小采時間：2020-11-27 22:43:01

asp.net中Datalist使用數字分頁的實現方法

asp.net中Datalist使用數字分頁的實現方法: 代碼如下:<%@ Page Language=C# AutoEventWireup=true CodeFile=Test(Datalist數字分頁).aspx.cs Inherits=Test_Datalist數字分頁_ %> <!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1

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導讀asp.net中Datalist使用數字分頁的實現方法: 代碼如下:<%@ Page Language=C# AutoEventWireup=true CodeFile=Test(Datalist數字分頁).aspx.cs Inherits=Test_Datalist數字分頁_ %> <!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1

代碼如下:


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test(Datalist數字分頁).aspx.cs" Inherits="Test_Datalist數字分頁_" %> 
<!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>無標題頁</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代碼： 
 代碼如下:
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數字分頁_ : 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 
 代碼如下:
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 的摘要說明 
/// </summary> 
public class PageNums 
{ 
/// </summary> 
/// <param name="ds">DataSet實例</param> 
/// <param name="datalistname">DataList名稱</param> 
/// <param name="pagesize">分頁大小</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; } 
//計算總頁數 
if (pagesize != 0) 
{ 
allpage = (total / pagesize);//計算總頁數 
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;//中間頁起始序號 
//中間頁終止序號 
endcount = page < 5 ? 10 : page + 5; 
if (startcount < 1) { startcount = 1; } //為了避免

輸出的時候產生負數，設置如果小于1就從序號1開始
if (allpage < endcount) { endcount = allpage; } //頁碼+5的可能性就會產生最終輸出序號大于總頁碼，那么就要將其控制在頁碼數之內
pagestr = "共" + allpage + "頁";
pagestr += page > 1 ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=1\">首頁</a>;<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + pre + "\">上一頁</a>" : "首頁上一頁";
//中間頁處理，這個增加時間復雜度，減小空間復雜度
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 + "\">下一頁</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + allpage + "\">末頁</a>" : " 下一頁末頁";
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);
//計算總頁數
if (pagesize != 0)
{
allpage = (total / pagesize);//計算總頁數
allpage = ((total % pagesize) != 0 ? allpage + 1 : allpage);
allpage = (allpage == 0 ? 1 : allpage);
}
next = page + 1;
pre = page - 1;
startcount = page / 5 * 5;//中間頁起始序號
//中間頁終止序號
endcount = startcount+5;
if (startcount < 1) { startcount = 1; } //為了避免輸出的時候產生負數，設置如果小于1就從序號1開始
if (allpage < endcount) { endcount = allpage; } //頁碼+5的可能性就會產生最終輸出序號大于總頁碼，那么就要將其控制在頁碼數之內
pagestr = "<a>"+page + "/" + allpage + "頁</a>";
pagestr += page > 1 ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=1\">首頁</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + pre + "\">上一頁</a>" : "首頁上一頁";
//中間頁處理，這個增加時間復雜度，減小空間復雜度
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 + "\">下一頁</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + allpage + "\">末頁</a>" : " 下一頁末頁";
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;
}
}

存儲過程pagesql
代碼如下:


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 -- 每頁數據行數 
,@toPage int --要轉到的頁碼 
AS 
BEGIN -- 根據每頁數據行數 和 要轉到的頁碼 得到 數據起止點 
Declare @start int 
Declare @end int 
set @end = @countPerPage * @toPage 
set @start = @countPerPage * (@toPage - 1) + 1 
-- 臨時表名稱 可隨機命名 
Declare @tmpTable varchar(10) 
SET @tmpTable ='#tmp' 
Declare @sqlStr varchar(800) 
-- 創建數據源到臨時表 
SELECT @sqlStr = 'SELECT Identity(int,1,1) AS RowIndex,' 
SELECT @sqlStr = @sqlStr + rtrim(@sqlSelect) + ' INTO '+ @tmpTable 
SELECT @sqlStr = @sqlStr + rtrim(@sqlFrom) 
-- 查詢臨時表 得到所需要的數據 
SELECT @sqlStr = @sqlStr + ' '+'SELECT '+ rtrim(@sqlSelect) +' FROM ' + @tmpTable 
SELECT @sqlStr = @sqlStr + ' WHERE RowIndex BETWEEN ' + Convert(char,@start) + " AND " + Convert(char,@end) 
-- 刪除臨時表 
SELECT @sqlStr = @sqlStr + ' '+'DROP TABLE '+@tmpTable 
EXEC (@sqlStr) 
END 
GO 

 
 




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asp.net中Datalist使用數字分頁的實現方法

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asp.net中Datalist使用數字分頁的實現方法

asp.net中Datalist使用數字分頁的實現方法

asp.net中Datalist使用數字分頁的實現方法

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