Asp.net Ajax 服务器控件使用--5.ConfirmButton

 <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <contenttemplate>

            <p>
            <asp:LinkButton ID="LinkButton" runat="server" OnClick="Button_Click">Click Me</asp:LinkButton>
            <cc1:ConfirmButtonExtender ID="ConfirmButtonExtender1" runat="server" TargetControlID="LinkButton" ConfirmText="Are you sure you want to click the LinkButton?" />
            
            <br />
            <br />
            <asp:Button ID="Button" runat="server" Text="Click Me" OnClick="Button_Click" /><br />
            <cc1:ConfirmButtonExtender ID="ConfirmButtonExtender2" runat="server" TargetControlID="Button" ConfirmText="Are you sure you want to click the Button?" />
            <br />
            </p>

            <asp:Label ID="Label1" runat="server"></asp:Label>

        </contenttemplate>
    </asp:UpdatePanel>

CS代码：

  protected void Button_Click(object sender, EventArgs e)
    {
        Label1.Text = "You clicked the " + ((Control)sender).ID + " at " + DateTime.Now.ToLongTimeString() + ".";
    }

更简单的方法：

 this.Button1.Attributes["onclick"]="javascript:return confirm('确定要停止下载么？');";