Page.aspx 写法:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Page.aspx.cs" Inherits="_Page" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Asp.net弹出新窗口，获得返回值</title>
<script type="text/javascript" >
function Pop()
{
var result=showModalDialog('downs.aspx','subpage','dialogWidth:400px;dialogHeight:300px;center:yes;help:no;resizable:no;status:no'); //打开模态子窗体,并获取返回值
document.getElementById("txt_id").value=result.split("|&|")[0]; //返回值分别赋值给相关文本框
document.getElementById("txt_name").value=result.split("|&|")[1];
document.getElementById("txt_pwd").value=result.split("|&|")[2];
}
</script>