通过Cookie，因为它既可以在服务器端对其进行操作，也可在客户端对其进行操作但是缺点是不安全，而且有时客户端会由于安全问题禁用Cookie！
例子：
以下是父页的Html代码
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="main.aspx.vb" Inherits="zero.main"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>main</title>
<meta content="Microsoft Visual Studio .NET 7.1">
<meta content="Visual Basic .NET 7.1">
<meta content="JavaScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5">
<script language="javascript" charset="gb2312">
function searchvalue()
{
var sql="select * from companyjob";
SetCookie("SendSql",sql);
var url="child.aspx";
window.open(url,'_blank');
}
function SetCookie(name, value)
{
document.cookie = name + "=" + value;
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout" >
<form method="post" runat="server">
<INPUT type="hidden"
name="Hidden1" runat="server"><INPUT type="button"
value="Open">
<asp:Button runat="server"
Text="Button"></asp:Button>
</form>
</body>
</HTML>
child 页[子页]
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="child.aspx.vb" Inherits="zero.child"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>child</title>
<meta content="Microsoft Visual Studio .NET 7.1">
<meta content="Visual Basic .NET 7.1">
<meta content="JavaScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5">
<script language =javascript >
function getv()
{
alert(document.forms("Hidden1"));
document.all("Hidden1").value=document.forms("Hidden1");
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout" >
<form method="post" runat="server">
<INPUT type="hidden"
name="Hidden1" runat="server"></FONT>
</form>
</body>
</HTML>
.vb文件
If Not IsPostBack Then
'Response.Write(Request.Form("Hidden1"))
Dim cookie As HttpCookie = Request.Cookies("SendSql")
If Not cookie Is Nothing Then
Response.Write(cookie.Value)
End If
End If
2。是思归大哥介绍的方法
在父页中加入一个非runat=server的form表单，用来提交隐藏控件的值到子页
<form method="post" target="_blank">
<input type=hidden>
</form>
<script language="javascript">
function searchvalue()
{
var sql="select * from companyjob";
document.all.form2.query.value=sql;
document.all.form2.action="child.aspx";
document.all.form2.submit();
}
</script>
子页的后台代码中 (.vb)
在Page_Load事件中写
Response.Write(Request.Form("query"))