子页面赋值给父页面的控件方法
在父页面Parent.aspx点击弹出第二个页面，将会弹出Child.aspx子页面，在子页面中输入需要传入到Parent.aspx的值点击确认，则可以把Child.aspx子页面输入的值传到Parent.aspx上的控件上。
Parent.aspx的HTML为：
<%@ Page language="c#" Codebehind="Parent.aspx.cs" AutoEventWireup="false" Inherits="TestToParent.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</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">
// ------------------弹出window.open窗口--------------------
function openwin(fileName,type,window_width,window_height,property)
{
var top = (window.screen.availHeight-window_height)/2;
var left = (window.screen.availWidth-window_width)/2;
var newwindow;
if (window_width=="" && window_height=="")
{
if (type=="0")
{
newwindow=window.open(fileName,"","left="+left+",top="+top+","+property);
}
else
{
newwindow=window.open(fileName,"","left=0,top=0,"+property);
}
}
else
{
if (type=="0")
{
newwindow=window.open(fileName,"","left=0,top=0,height="+window_height+",width="+window_width+","+property);
}
else
{
newwindow=window.open(fileName,"","left="+left+",top="+top+",height="+window_height+",width="+window_width+","+property);
}
}
return newwindow;
}
function openwinsimp(fileName,window_width,window_height)
{
//alert(fileName);
var newwindow=openwin(fileName,'1',window_width,window_height,'resizable=no,scrollbars=auto,status=yes,toolbar=no,menubar=no,location=no');
newwindow.focus();
return newwindow;
}
</script>
<script>
function getid()
{
var id = new String(window.location.href);
//alert(id);
if( id.indexOf("id=", 1) ==-1 )
{
id=-1;
}
else
{
id = parseInt( id.substr( id.indexOf("id=", 1) + 3 ) );
}
// alert(id);
return id;
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<a href="#" onclick="openwinsimp('./Child.aspx?id='+getid()+'&type=d1&ctrl1ID=txt_Child',1024,768)">
弹出一个页面</a>
<asp:TextBox id="txt_Child" style="Z-INDEX: 101; LEFT: 232px; POSITION: absolute; TOP: 80px"
runat="server"></asp:TextBox>
<asp:Label id="Label1" style="Z-INDEX: 102; LEFT: 96px; POSITION: absolute; TOP: 32px" runat="server">第一个页面</asp:Label>
<asp:Label id="Label2" style="Z-INDEX: 103; LEFT: 40px; POSITION: absolute; TOP: 88px" runat="server">你在第二个页面输入的是：</asp:Label>
</form>
</body>
</HTML>
预览如下：
<%@ Page language="c#" Codebehind="Child.aspx.cs" AutoEventWireup="false" Inherits="TestToParent.WebForm2" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm2</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">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<FONT face="宋体">
<asp:Button id="Button1" style="Z-INDEX: 101; LEFT: 120px; POSITION: absolute; TOP: 128px" runat="server"
Text="Button"></asp:Button>
<asp:TextBox id="TextBox1" style="Z-INDEX: 102; LEFT: 96px; POSITION: absolute; TOP: 88px" runat="server"></asp:TextBox>
<asp:Label id="Label1" style="Z-INDEX: 103; LEFT: 0px; POSITION: absolute; TOP: 96px" runat="server">第二个页面</asp:Label></FONT>
</form>
</body>
</HTML>
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if (Request.Params["ctrl1ID"] != null)
{
ViewState["ctrl1ID"] = Request.Params["ctrl1ID"].Trim();
}
}
Web 窗体设计器生成的代码
/// <summary>
/// 生成script脚本,完成对父窗口控件的赋值
/// </summary>
/// <param name="value1">控件1的值</param>
/// <param name="value2">控件2的值</param>
/// <returns></returns>
private string MakeScriptStr(string text)
{
//value= " [" + value + "]";
string result = "<script>";
result += "window.opener.document.all('" + ViewState["ctrl1ID"] + "',0).value='" + text + "';";
result += "window.close();";
result += "</script>";
return result;
}
private void Button1_Click(object sender, System.EventArgs e)
{
string strScript = this.MakeScriptStr(this.TextBox1.Text);
Page.RegisterStartupScript("return1", strScript);
}
Parent.aspx的HTML为：
<%@ Page language="c#" Codebehind="Parent.aspx.cs" AutoEventWireup="false" Inherits="TestToParent.WebForm1" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ><HTML> <HEAD> <title>WebForm1</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">// ------------------弹出window.open窗口--------------------function openwin(fileName,type,window_width,window_height,property){ 
var top = (window.screen.availHeight-window_height)/2; var left = (window.screen.availWidth-window_width)/2; var newwindow; if (window_width=="" && window_height=="") {
if (type=="0") { newwindow=window.open(fileName,"","left="+left+",top="+top+","+property); } else { newwindow=window.open(fileName,"","left=0,top=0,"+property); } } else { if (type=="0") { newwindow=window.open(fileName,"","left=0,top=0,height="+window_height+",width="+window_width+","+property); } else { newwindow=window.open(fileName,"","left="+left+",top="+top+",height="+window_height+",width="+window_width+","+property); } } return newwindow;}function openwinsimp(fileName,window_width,window_height){ //alert(fileName); var newwindow=openwin(fileName,'1',window_width,window_height,'resizable=no,scrollbars=auto,status=yes,toolbar=no,menubar=no,location=no'); newwindow.focus(); return newwindow;} </script> <script> function getid() { var id = new String(window.location.href); //alert(id); if( id.indexOf("id=", 1) ==-1 ) { id=-1; } else { id = parseInt( id.substr( id.indexOf("id=", 1) + 3 ) ); } // alert(id); return id; } </script> </HEAD> <body MS_POSITIONING="GridLayout"> <form id="Form1" method="post" runat="server"> <a href="#" onclick="openwinsimp('./Child.aspx?id='+getid()+'&type=d1&ctrl1ID=txt_Child',1024,768)"> 弹出一个页面</a> <asp:TextBox id="txt_Child" style="Z-INDEX: 101; LEFT: 232px; POSITION: absolute; TOP: 80px" runat="server"></asp:TextBox> <asp:Label id="Label1" style="Z-INDEX: 102; LEFT: 96px; POSITION: absolute; TOP: 32px" runat="server">第一个页面</asp:Label> <asp:Label id="Label2" style="Z-INDEX: 103; LEFT: 40px; POSITION: absolute; TOP: 88px" runat="server">你在第二个页面输入的是：</asp:Label> </form> </body></HTML>预览如下：
<%@ Page language="c#" Codebehind="Child.aspx.cs" AutoEventWireup="false" Inherits="TestToParent.WebForm2" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ><HTML> <HEAD> <title>WebForm2</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"> </HEAD> <body MS_POSITIONING="GridLayout"> <form id="Form1" method="post" runat="server"> <FONT face="宋体"> <asp:Button id="Button1" style="Z-INDEX: 101; LEFT: 120px; POSITION: absolute; TOP: 128px" runat="server" Text="Button"></asp:Button> <asp:TextBox id="TextBox1" style="Z-INDEX: 102; LEFT: 96px; POSITION: absolute; TOP: 88px" runat="server"></asp:TextBox> <asp:Label id="Label1" style="Z-INDEX: 103; LEFT: 0px; POSITION: absolute; TOP: 96px" runat="server">第二个页面</asp:Label></FONT> </form> </body></HTML>
.CS代码：
private void Page_Load(object sender, System.EventArgs e) { // 在此处放置用户代码以初始化页面 if (Request.Params["ctrl1ID"] != null) { ViewState["ctrl1ID"] = Request.Params["ctrl1ID"].Trim(); } } Web 窗体设计器生成的代码 /// <summary> /// 生成script脚本,完成对父窗口控件的赋值 /// </summary> /// <param name="value1">控件1的值</param> /// <param name="value2">控件2的值</param> /// <returns></returns> private string MakeScriptStr(string text) { //value= " [" + value + "]"; string result = "<script>"; result += "window.opener.document.all('" + ViewState["ctrl1ID"] + "',0).value='" + text + "';"; result += "window.close();"; result += "</script>"; return result; } private void Button1_Click(object sender, System.EventArgs e) { string strScript = this.MakeScriptStr(this.TextBox1.Text); Page.RegisterStartupScript("return1", strScript); }