如何点击按钮弹出新窗口，输入数据后返回并刷新页面？_[Asp.Net教程]
在一些.NET论坛中有人经常会问：如何在页面中点击按钮打开新页面，输入数据，然后返回到初始页面并进行更新？要解决这个问题，应该弄清楚window.showModalDialog()的用法，本人在http://www.csdn.net/Develop/read_article.asp?id=15113已经做过介绍。下面就用例子介绍如何在ASP.NET中实现这个功能。
本例子共3个页面，其中WebForm2.aspx是过渡页面，是为了防止提交时打开新页面。
WebForm1.aspx
<![CDATA[<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm1.aspx.vb" Inherits="ShowModalDialog.WebForm1" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML> <HEAD> <title>WebForm1</title> </HEAD> <body MS_POSITIONING="GridLayout"> <form id="Form1" method="post" runat="server"> <asp:label id="Label1" runat="server" Font-Bold="true"> 从当前页面打开新窗口，并把变量传递到新窗口的例子，可以多次打开提交。 </asp:label> <asp:textbox id="TextBox1" runat="server" Width="600px">这是初始值，将被传递到新窗口。</asp:textbox> <asp:button id="Button1" runat="server" Text="打开窗口" Width="96px"></asp:button></form> </body></HTML>]]>WebForm1.aspx.vb
<![CDATA[Public Class WebForm1 Inherits System.Web.UI.Page Protected WithEvents TextBox1 As System.Web.UI.WebControls.TextBox Protected WithEvents Form1 As System.Web.UI.HtmlControls.HtmlForm Protected WithEvents Label1 As System.Web.UI.WebControls.Label Protected WithEvents Button1 As System.Web.UI.WebControls.Button#Region " Web 窗体设计器生成的代码 " '该调用是 Web 窗体设计器所必需的。 <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() End Sub Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init 'CODEGEN: 此方法调用是 Web 窗体设计器所必需的 '不要使用代码编辑器修改它。 InitializeComponent() End Sub#End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load '在此处放置初始化页的用户代码 If (Not IsClientScriptBlockRegistered("clientScript")) Then Dim strScript As String = "" + vbCrLf strScript += "function OpenWin(){" + vbCrLf strScript += "var str=window.showModalDialog('WebForm2.aspx',document.Form1.TextBox1.value)" + vbCrLf strScript += "if(str!=null) document.Form1.TextBox1.value=str" + vbCrLf strScript += "}" + vbCrLf strScript += "" + vbCrLf RegisterClientScriptBlock("clientScript", strScript) End If Button1.Attributes.Add("<I>onclick</I>", "OpenWin()") End SubEnd Class]]>WebForm2.aspx
<![CDATA[<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm2.aspx.vb" Inherits="aspxWeb.mengxianhui.com.WebForm2"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML> <HEAD> <title>WebForm2</title> </HEAD> </frameset></HTML>]]>WebForm2.aspx.vb
<![CDATA[Public Class WebForm2 Inherits System.Web.UI.Page#Region " Web 窗体设计器生成的代码 " '该调用是 Web 窗体设计器所必需的。 <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() End Sub Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init 'CODEGEN: 此方法调用是 Web 窗体设计器所必需的 '不要使用代码编辑器修改它。 InitializeComponent() End Sub#End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load '在此处放置初始化页的用户代码 End SubEnd Class]]>WebForm3.aspx
<![CDATA[<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm3.aspx.vb" Inherits="ShowModalDialog.WebForm3" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML> <HEAD> <title>WebForm3</title> </HEAD> <body MS_POSITIONING="GridLayout" id="MyBody" runat="server"> <form id="Form1" method="post" runat="server"> <asp:Label id="Label1" runat="server">请输入您的大名：</asp:Label> <asp:TextBox id="TextBox1" runat="server" Width="558"></asp:TextBox> <asp:Button id="Button1" runat="server" Text=" 提 交 "></asp:Button> </form> </body></HTML>]]>WebForm3.aspx.vb
<![CDATA[Public Class WebForm3 Inherits System.Web.UI.Page Protected WithEvents TextBox1 As System.Web.UI.WebControls.TextBox Protected WithEvents Label1 As System.Web.UI.WebControls.Label Protected WithEvents Button1 As System.Web.UI.WebControls.Button Protected MyBody As System.Web.UI.HtmlControls.HtmlControl#Region " Web 窗体设计器生成的代码 " '该调用是 Web 窗体设计器所必需的。 <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() End Sub Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init 'CODEGEN: 此方法调用是 Web 窗体设计器所必需的 '不要使用代码编辑器修改它。 InitializeComponent() End Sub#End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load '在此处放置初始化页的用户代码 If IsPostBack Then Dim strScript As String = "" + vbCrLf strScript += "window.parent.returnValue='" + TextBox1.Text.Replace("'", "\'") + "'" + vbCrLf strScript += "window.parent.close()" + vbCrLf strScript += "" + vbCrLf If (Not IsClientScriptBlockRegistered("clientScript")) Then RegisterClientScriptBlock("clientScript", strScript) End If End If If Not IsPostBack Then MyBody.Attributes.Add("onload", "document.Form1.TextBox1.value=window.parent.dialogArguments") End If End SubEnd Class]]><![CDATA[ ]]><![CDATA[ ]]><![CDATA[ ]]><![CDATA[作者：孟宪会 出自：【孟宪会之精彩世界】]]>