asp.net 分页sql语句(结合aspnetpager)
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2023-12-24 08:47:45
数据库操作类：复制代码 代码如下:/// /// 取得总数 /// /// ...
数据库操作类：
/// <summary>
/// 取得总数
/// </summary>
/// <returns></returns>
public string gettotal()
{
stringbuilder sb = new stringbuilder();
sb.append("select count(*) total from test");
datatable dt = dbhelper.executedt(sb.tostring());
return dt.rows[0][0].tostring();
}
/// <summary>
/// 根据当前页码，每页条数，取得相应数据。
/// </summary>
/// <param name="pagenum">每页显示条数</param>
/// <param name="currentpage">当前页码</param>
/// <returns></returns>
public datatable getpagesdata(int pagenum, int currentpage)
{
stringbuilder sb = new stringbuilder();
sb.append("select top " + pagenum + " * from test where ");
sb.append("id not in (select top " + pagenum * currentpage + " id from test)");
return dbhelper.executedt(sb.tostring());
}
前台：
<%@ page language="c#" autoeventwireup="true" codefile="default.aspx.cs" inherits="sqlpager_default" %>
<%@ register assembly="aspnetpager" namespace="wuqi.webdiyer" tagprefix="webdiyer" %>
<!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>不用存储过程的分页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:gridview id="gvsql" runat="server">
</asp:gridview>
</div>
<div>
<webdiyer:aspnetpager id="aspnetpager1" runat="server" onpagechanged="aspnetpager1_pagechanged" pagesize="3">
</webdiyer:aspnetpager>
</div>
</form>
</body>
</html>
后台：
using system;
using system.data;
using system.configuration;
using system.collections;
using system.web;
using system.web.security;
using system.web.ui;
using system.web.ui.webcontrols;
using system.web.ui.webcontrols.webparts;
using system.web.ui.htmlcontrols;
public partial class sqlpager_default : system.web.ui.page
{
bll.test test = new bll.test();
protected void page_load(object sender, eventargs e)
{
if (!ispostback)
{
aspnetpager1.recordcount = convert.toint32(test.gettotal());//此属性保存总记录数..
bind();
}
}
private void bind()
{
this.gvsql.datasource = test.getpagesdata(convert.toint32(aspnetpager1.pagesize), aspnetpager1.currentpageindex - 1);
this.gvsql.databind();
}
protected void aspnetpager1_pagechanged(object sender, eventargs e)
{
bind();
}
}
复制代码 代码如下:
/// <summary>
/// 取得总数
/// </summary>
/// <returns></returns>
public string gettotal()
{
stringbuilder sb = new stringbuilder();
sb.append("select count(*) total from test");
datatable dt = dbhelper.executedt(sb.tostring());
return dt.rows[0][0].tostring();
}
/// <summary>
/// 根据当前页码，每页条数，取得相应数据。
/// </summary>
/// <param name="pagenum">每页显示条数</param>
/// <param name="currentpage">当前页码</param>
/// <returns></returns>
public datatable getpagesdata(int pagenum, int currentpage)
{
stringbuilder sb = new stringbuilder();
sb.append("select top " + pagenum + " * from test where ");
sb.append("id not in (select top " + pagenum * currentpage + " id from test)");
return dbhelper.executedt(sb.tostring());
}
前台：
复制代码 代码如下:
<%@ page language="c#" autoeventwireup="true" codefile="default.aspx.cs" inherits="sqlpager_default" %>
<%@ register assembly="aspnetpager" namespace="wuqi.webdiyer" tagprefix="webdiyer" %>
<!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>不用存储过程的分页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:gridview id="gvsql" runat="server">
</asp:gridview>
</div>
<div>
<webdiyer:aspnetpager id="aspnetpager1" runat="server" onpagechanged="aspnetpager1_pagechanged" pagesize="3">
</webdiyer:aspnetpager>
</div>
</form>
</body>
</html>
后台：
复制代码 代码如下:
using system;
using system.data;
using system.configuration;
using system.collections;
using system.web;
using system.web.security;
using system.web.ui;
using system.web.ui.webcontrols;
using system.web.ui.webcontrols.webparts;
using system.web.ui.htmlcontrols;
public partial class sqlpager_default : system.web.ui.page
{
bll.test test = new bll.test();
protected void page_load(object sender, eventargs e)
{
if (!ispostback)
{
aspnetpager1.recordcount = convert.toint32(test.gettotal());//此属性保存总记录数..
bind();
}
}
private void bind()
{
this.gvsql.datasource = test.getpagesdata(convert.toint32(aspnetpager1.pagesize), aspnetpager1.currentpageindex - 1);
this.gvsql.databind();
}
protected void aspnetpager1_pagechanged(object sender, eventargs e)
{
bind();
}
}