前提条件：B页面是由A页面打开的。
方法：
在A页面的前台代码中加入以下代码：
<script language="javascript">function DownDvasp(htmlurl){var
newwin=window.open(htmlurl,'','toolbar=no,location=no,directories=no,status=no,menub
ar=no,scrollbars=no,resizable=no');return false;}</script>
此代码如果在继承母版页的asp.net页面中就需要加在<asp:Content ID="Content1"
ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">行下。
如果在一般的asp.net页面中就需加在<HEAD>段中。
然后在需链接打开的位置加入：
<a href="B.aspx?id=<%# Eval("id")%>" onclick="return DownDvasp(this.href);">回复此留
言</a>
这样单击此链接就可打开一个窗口了。
在B页面的前台代码中加入以下代码：
<input type='button' value='关闭窗口'
onclick='javascript:window.opener.location.href="A.aspx";window.close();''>
这样就实现了关闭B窗口的同时重新刷新A窗口的目地。
若只是关闭窗口而不需重新刷新A窗口，只需改成onclick='window.close()'就行了。
下面是我所做的一个回复留言的完整代码：
liuyanmanager.aspx
<%@ Page Language="C#" MasterPageFile="~/admin/MasterPageadmin.master"
AutoEventWireup="true" CodeFile="liuyanmanager.aspx.cs"
Inherits="admin_liuyanmanager" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1"
Runat="Server">
<script language="javascript">function DownDvasp(htmlurl){var
newwin=window.open(htmlurl,'','toolbar=no,location=no,directories=no,status=no,menub
ar=no,scrollbars=no,resizable=no');return false;}</script>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataKeyNames="id"
DataSourceID="SqlDataSourcehufu" Width="100%">
<Columns>
<asp:TemplateField HeaderText="会员名" SortExpression="userid">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("userid")
%>' Visible="False"></asp:Label>
<asp:FormView ID="FormView1" runat="server"
DataSourceID="SqlDataSourceuser">
<ItemTemplate>
<asp:Label ID="UserNameLabel" runat="server"
Text='<%# Bind("UserName") %>'></asp:Label><br />
</ItemTemplate>
</asp:FormView>
<asp:SqlDataSource ID="SqlDataSourceuser" runat="server"
ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString %>"
SelectCommand="SELECT UserId, UserName FROM vw_aspnet_Users
WHERE (UserId = @userid)">
<SelectParameters>
<asp:ControlParameter ControlID="Label1" Name="userid"
PropertyName="Text" />
</SelectParameters>
</asp:SqlDataSource>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="留言" SortExpression="liuyan">
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%# Bind("liuyan")
%>'></asp:Label>
</ItemTemplate>
<ItemStyle Width="520px" />
</asp:TemplateField>
<asp:TemplateField HeaderText="留言时间" SortExpression="liuyantime">
<ItemTemplate>
<asp:Label ID="Label4" runat="server" Text='<%#
Bind("liuyantime") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="回复">
<ItemTemplate>
<a href="hufu.aspx?id=<%# Eval("id")%>" onclick="return
DownDvasp(this.href);">回复此留言</a>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSourcehufu" runat="server" ConnectionString="<%$
ConnectionStrings:articleConnectionString %>"
SelectCommand="SELECT id, userid, liuyan, hufu, liuyantime FROM liuyan WHERE
(hufu = N'未回复')">
</asp:SqlDataSource>
</asp:Content>
hufu.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="hufu.aspx.cs"
Inherits="admin_hufu" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>回复留言</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table align="center" border="0" cellpadding="0" cellspacing="0"
style=" 500px">
<tr>
<td style=" 500px">
</td>
</tr>
<tr>
<td style=" 500px">
<asp:FormView ID="FormView1" runat="server" DataKeyNames="id"
DataSourceID="SqlDataSource1" Width="500px">
<ItemTemplate>
<table border="0" cellpadding="0" cellspacing="0"
style=" 480px">
<tr>
<td width="480" style="text-align: center"
align="center" valign="top">
<asp:Label ID="useridLabel" runat="server"
Text='<%# Bind("userid") %>' Visible="False"></asp:Label><asp:FormView
ID="FormView2" runat="server"
DataSourceID="SqlDataSourceuser">
<ItemTemplate>
来自
<asp:Label ID="UserNameLabel"
runat="server" Text='<%# Bind("UserName") %>'></asp:Label>的留言：<br />
</ItemTemplate>
</asp:FormView>
</td>
</tr>
<tr>
<td width="480" align="center">
<asp:TextBox ID="TextBox1"
runat="server" Height="80px" ReadOnly="True" Text='<%# Bind("liuyan") %>'
TextMode="MultiLine"
Width="480px"></asp:TextBox></td>
</tr>
</table>
<asp:SqlDataSource ID="SqlDataSourceuser"
runat="server" ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString %>"
SelectCommand="SELECT UserId, UserName
FROM vw_aspnet_Users WHERE (UserId = @UserId)">
<SelectParameters>
<asp:ControlParameter
ControlID="useridLabel" Name="UserId" PropertyName="Text" />
</SelectParameters>
</asp:SqlDataSource>
</ItemTemplate>
</asp:FormView>
</td>
</tr>
<tr>
<td style=" 500px">
回复：</td>
</tr>
<tr>
<td align="left" style=" 500px">
<asp:TextBox ID="txthufu" runat="server" Height="80px"
TextMode="MultiLine" Width="480px"></asp:TextBox></td>
</tr>
<tr>
<td align="center" style=" 500px">
<asp:Button ID="Button1" runat="server" Text="回复"
OnClick="Button1_Click" />
<input type='button' value='关闭窗口'
onclick='javascript:window.opener.location.href="liuyanmanager.aspx";window.close();
''></td>
</tr>
</table>
</div>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$
ConnectionStrings:articleConnectionString %>"
SelectCommand="SELECT [id], [userid], [liuyan], [hufu] FROM [liuyan]
WHERE ([id] = @id)">
<SelectParameters>
<asp:QueryStringParameter Name="id" QueryStringField="id"
Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</form>
</body>
</html>
hufu.aspx的部分后台代码：
protected void Button1_Click(object sender, EventArgs e)
{
string hufustring = this.txthufu.Text.Trim();
if (hufustring != "" && hufustring != string.Empty)
{
hufustring = hufustring.Replace("'", "“");
string sql = "UPDATE liuyan SET hufu ='"+hufustring+"' WHERE id =
'"+Request.QueryString["id"]+"'";
using (SqlConnection connection = new
SqlConnection(ConfigurationManager.ConnectionStrings["articleConnectionString"].Conn
ectionString))
{
using (SqlCommand command = new SqlCommand(sql, connection))
{
connection.Open();
command.ExecuteNonQuery();
}
}
}
}