XmlHttp实现无刷新三联动ListBox
<HTML>
<HEAD>
<title>XmlHttp实现无刷新三联动ListBox</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
<SCRIPT LANGUAGE="JavaScript">
<!--
//以XML求取ListBox2的数据
function XmlPost2(obj)
{
var svalue = obj.value;
var webFileUrl = "?povinceid=" + svalue;
var result = "";
var xmlHttp = new ActiveXObject("MSXML2.XMLHTTP");
xmlHttp.open("POST", webFileUrl, false);
xmlHttp.send("");
result = xmlHttp.responseText;
if(result != "")
{
document.all("ListBox2").length=0;
var piArray = result.split(",");
for(var i=0;i<piArray.length;i++)
{
var ary1 = piArray[i].toString().split("|");
document.all("ListBox2").options.add(new Option(ary1[1].toString(),ary1[0].toString()));
}
}
else
{
alert(result);
}
}
//以XML求取ListBox3的数据
function XmlPost3(obj)
{
var svalue = obj.value;
var webFileUrl = "?cityid=" + svalue;
var result = "";
var xmlHttp = new ActiveXObject("MSXML2.XMLHTTP");
xmlHttp.open("POST", webFileUrl, false);
xmlHttp.send("");
result = xmlHttp.responseText;
if(result != "")
{
document.all("ListBox3").length=0;
var piArray = result.split(",");
for(var i=0;i<piArray.length;i++)
{
var ary1 = piArray[i].toString().split("|");
document.all("ListBox3").options.add(new Option(ary1[1].toString(),ary1[0].toString()));
}
}
else
{
alert(result);
}
}
//-->
</SCRIPT>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:ListBox id="ListBox1" style="Z-INDEX: 101; LEFT: 24px; POSITION: absolute; TOP: 16px" runat="server"
Height="448px" Width="200px"></asp:ListBox>
<asp:ListBox id="ListBox2" style="Z-INDEX: 102; LEFT: 352px; POSITION: absolute; TOP: 24px" runat="server"
Height="432px" Width="168px"></asp:ListBox>
<asp:ListBox id="ListBox3" style="Z-INDEX: 103; LEFT: 568px; POSITION: absolute; TOP: 24px" runat="server"
Height="424px" Width="200px"></asp:ListBox>
</form>
</body>
</HTML>2.cs代码
public class WebForm2 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.ListBox ListBox1;
protected System.Web.UI.WebControls.ListBox ListBox2;
protected System.Web.UI.WebControls.ListBox ListBox3;
public static string ConnectionString=System.Configuration .ConfigurationSettings .AppSettings["ConnectionString"];
GetDataSet
![]()
property
![]()
Page_Load
![]()
down2_bind
![]()
down3_bind
down1_bind
![]()
Web Form Designer generated code
}
3.数据库下载/Files/singlepine/area.rar
4.数据库脚本(3,4随便一个就可以)
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[area]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[area]
GO
![]()
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[city]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[city]
GO
![]()
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[povince]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[povince]
GO
![]()
CREATE TABLE [dbo].[area] (
[id] [int] NOT NULL ,
[areaID] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
[area] [nvarchar] (60) COLLATE Chinese_PRC_CI_AS NULL ,
[father] [nvarchar] (6) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
![]()
CREATE TABLE [dbo].[city] (
[id] [int] NOT NULL ,
[cityID] [nvarchar] (6) COLLATE Chinese_PRC_CI_AS NULL ,
[city] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
[father] [nvarchar] (6) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
![]()
CREATE TABLE [dbo].[povince] (
[id] [int] NOT NULL ,
[provinceID] [nvarchar] (6) COLLATE Chinese_PRC_CI_AS NULL ,
[province] [nvarchar] (40) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
4.数据库脚本(3,4随便一个就可以)