Button按钮删除确认框三种方法

前台aspx代码：

<script type="text/javascript">
function deleteConfirm() {
return confirm("是否删除");
}
</script>

<ext:ResourceManager ID="ResourceManager1" runat="server" />

<ext:Button ID="Button1" runat="server" Text="方法一">
<Listeners>
<Click Fn="deleteConfirm" />
</Listeners>
<DirectEvents>
<Click OnEvent="button1_click">
</Click>
</DirectEvents>
</ext:Button>
<ext:Button ID="Button2" runat="server" Text="方法二">
<DirectEvents>
<Click OnEvent="button1_click">
<Confirmation ConfirmRequest="true" Title="确认" Message="您确实要删除吗?" />
</Click>
</DirectEvents>
</ext:Button>

<ext:Button ID="button3" runat="server" Text="方法三" OnDirectClick="button1_click">
</ext:Button>

后台cs代码：

protected void Page_Load(object sender, EventArgs e)
{
button3.Listeners.Click.Fn = "deleteConfirm";
}

protected void button1_click(object sender, DirectEventArgs e)
{
X.Msg.Alert("hell0", "test").Show();
}