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如何点击按钮弹出新窗口，输入数据后返回并刷新页面？

作者：未知 来源：月光软件站 加入时间：2005-2-28　月光软件站

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

<%@ 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> <meta content="Microsoft Visual Studio .NET 7.0" name="GENERATOR"> <meta content="Visual Basic 7.0" name="CODE_LANGUAGE"> <meta content="JavaScript" name="vs_defaultClientScript"> <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema"> </HEAD> <body MS_POSITIONING="GridLayout"> <div align="center"> <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><br> <br> <asp:textbox id="TextBox1" runat="server" Width="600px">这是初始值，将被传递到新窗口。</asp:textbox><br> <br> <asp:button id="Button1" runat="server" Text="打开窗口" Width="96px"></asp:button></form> </div> </body> </HTML>

WebForm1.aspx.vb

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 = "<script>" + 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 += "</script>" + vbCrLf RegisterClientScriptBlock("clientScript", strScript) End If Button1.Attributes.Add("onclick", "OpenWin()") End Sub End Class

WebForm2.aspx

<%@ 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> <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.0"> <meta name="CODE_LANGUAGE" content="Visual Basic 7.0"> <meta name="vs_defaultClientScript" content="JavaScript"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> </HEAD> <frameset rows="0,*"> <frame src="about:blank"> <frame src="WebForm3.aspx"> </frameset> </HTML>

WebForm2.aspx.vb

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 Sub End Class

WebForm3.aspx

<%@ 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> <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.0"> <meta name="CODE_LANGUAGE" content="Visual Basic 7.0"> <meta name="vs_defaultClientScript" content="JavaScript"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> </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><br> <br> <asp:TextBox id="TextBox1" runat="server" Width="558"></asp:TextBox><br> <br> <asp:Button id="Button1" runat="server" Text=" 提 交 "></asp:Button> </form> </body> </HTML>

WebForm3.aspx.vb

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 = "<script>" + vbCrLf strScript += "window.parent.returnValue='" + TextBox1.Text.Replace("'", "\'") + "'" + vbCrLf strScript += "window.parent.close()" + vbCrLf strScript += "</script>" + 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 Sub End Class


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