Button按鈕與AjaxControlToolkit的ConfirmButtonExtender接不起來?
我想用AjaxControlToolkit的ConfirmButtonExtender来弹出一个对话框。可是按了button按钮了，却没有反应的，可能是没有触发到ConfirmButtonExtender，哪位高手，给我看看，在哪里写错了。谢谢。<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Chapter4_Default2" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<!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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" EventName="" />
</Triggers>
<ContentTemplate>
<fieldset>
<legend>页面更新部分</legend>
<%=DateTime.Now.ToString() %>
<br />
</fieldset>
</ContentTemplate>
</asp:UpdatePanel>
<asp:Button ID="Button1" runat="server" Text="刷新时间" OnClientClick="return confirm('确定要更新时间吗？')"/>
</div>
</form>
</body>
</html>
--------------------编程问答--------------------
--------------------编程问答--------------------
<asp:Button ID="Button1" runat="server" Text="Button" /><ajaxToolkit:ConfirmButtonExtender ID="ConfirmButtonExtender1" runat="server"
TargetControlID ="Button1"
ConfirmText="?">
</ajaxToolkit:ConfirmButtonExtender>
补充：.NET技术 , ASP.NET
