数据分页，just YY（未完，待完善）
数据库：db
表：create table fy(
id int primary key auto_inrement,
title varchar(50)
);
后台
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected string currentPage;
protected void Page_Load(object sender, EventArgs e)
{
if (Request.Form["select"] == null)
{
currentPage = "1";
return;
}
currentPage = Request.Form["select"];
}
//select top 20 * from fy as ty where id not in (select top 10 id from fy);
protected StringBuilder sb(string num)
{
StringBuilder stbu = new StringBuilder();
string str = "";
int num2 = Convert.ToInt32(num) * 10;
int num1 = num2 - 10;
SqlConnection conn = new SqlConnection("server=.; database=db; integrated security=true;");
conn.Open();
SqlCommand cmd = new SqlCommand("select top " + num2 + " * from fy as ty where id not in (select top " + num1 + " id from fy)", conn);
SqlDataReader sdr = cmd.ExecuteReader();
while (sdr.Read())
{
str = sdr.GetString(sdr.GetOrdinal("title")).ToString() + "<br /><hr />";
stbu.Append(str);
}
sdr.Close();
cmd.Dispose();
conn.Close();
conn.Dispose();
return stbu;
}
//获取 分页 的 数量
protected int newsCount()
{
int n = 0;
SqlConnection con = CreateConnection();
con.Open();
SqlCommand cmd = new SqlCommand("select Count(*) as num from fy", con);
SqlDataReader sdr = cmd.ExecuteReader();
if (sdr.Read())
{
n = sdr.GetInt32(sdr.GetOrdinal("num"));
}
if (n % 10 == 0)
{
n = n / 10;
}
if (n % 10 != 0)
{
n = n / 10 + 1;
}
sdr.Close();
cmd.Dispose();
con.Close();
con.Dispose();
return n;
}
protected StringBuilder CreateOption()
{
StringBuilder sb = new StringBuilder();
int getCount = newsCount();
for (int i = 1; i <= getCount; i++)
{
sb.Append("<option value='"+i.ToString()+"'>"+i.ToString()+"</option>");
}
return sb;
}
protected SqlConnection CreateConnection()
{
SqlConnection conn = new SqlConnection("server=.; database=db; integrated security=true;");
return conn;
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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></title>
<script type="text/javascript">
function abc() {
// alert("Mu JJ");
var getSelect = document.getElementsByTagName("select")[0];
getSelect.onchange = function() {
document.getElementsByTagName("form")[0].submit();
}
}
</script>
</head>
<body onload="abc()">
<form id="form1" runat="server">
<div>
第<select name="select">
<%=CreateOption()%>
</select>页<br />
<%=sb(currentPage) %>
<%=newsCount()%>
</div>
</form>
</body>
</html>
表：create table fy(
id int primary key auto_inrement,
title varchar(50)
);
后台
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected string currentPage;
protected void Page_Load(object sender, EventArgs e)
{
if (Request.Form["select"] == null)
{
currentPage = "1";
return;
}
currentPage = Request.Form["select"];
}
//select top 20 * from fy as ty where id not in (select top 10 id from fy);
protected StringBuilder sb(string num)
{
StringBuilder stbu = new StringBuilder();
string str = "";
int num2 = Convert.ToInt32(num) * 10;
int num1 = num2 - 10;
SqlConnection conn = new SqlConnection("server=.; database=db; integrated security=true;");
conn.Open();
SqlCommand cmd = new SqlCommand("select top " + num2 + " * from fy as ty where id not in (select top " + num1 + " id from fy)", conn);
SqlDataReader sdr = cmd.ExecuteReader();
while (sdr.Read())
{
str = sdr.GetString(sdr.GetOrdinal("title")).ToString() + "<br /><hr />";
stbu.Append(str);
}
sdr.Close();
cmd.Dispose();
conn.Close();
conn.Dispose();
return stbu;
}
//获取 分页 的 数量
protected int newsCount()
{
int n = 0;
SqlConnection con = CreateConnection();
con.Open();
SqlCommand cmd = new SqlCommand("select Count(*) as num from fy", con);
SqlDataReader sdr = cmd.ExecuteReader();
if (sdr.Read())
{
n = sdr.GetInt32(sdr.GetOrdinal("num"));
}
if (n % 10 == 0)
{
n = n / 10;
}
if (n % 10 != 0)
{
n = n / 10 + 1;
}
sdr.Close();
cmd.Dispose();
con.Close();
con.Dispose();
return n;
}
protected StringBuilder CreateOption()
{
StringBuilder sb = new StringBuilder();
int getCount = newsCount();
for (int i = 1; i <= getCount; i++)
{
sb.Append("<option value='"+i.ToString()+"'>"+i.ToString()+"</option>");
}
return sb;
}
protected SqlConnection CreateConnection()
{
SqlConnection conn = new SqlConnection("server=.; database=db; integrated security=true;");
return conn;
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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></title>
<script type="text/javascript">
function abc() {
// alert("Mu JJ");
var getSelect = document.getElementsByTagName("select")[0];
getSelect.onchange = function() {
document.getElementsByTagName("form")[0].submit();
}
}
</script>
</head>
<body onload="abc()">
<form id="form1" runat="server">
<div>
第<select name="select">
<%=CreateOption()%>
</select>页<br />
<%=sb(currentPage) %>
<%=newsCount()%>
</div>
</form>
</body>
</html>
