如標題：
<%@Page language="VB"%>
<script runat="server">
Sub Page_Load(sender as Object, e as EventArgs)
tbTest.text="Cancel"
'利用attributes屬性可以用在任何使用js代碼的地方
btntest.Attributes.Add("onclick", "return confirm('Ok or Cancel?');")
End Sub
Sub btnTestClick(sender as Object, e as EventArgs)
tbTest.text="Ok"
End Sub
</script>
<html>
<head></head>
<body>
<form runat="server">
<asp:textbox id="tbTest" runat="server"/>
<asp:button id="btnTest" runat="server" text="Test" onclick="btnTestClick"/>
</form>
</body>
</html>
點擊按鈕，可以彈出一個對話方塊，只有在選擇“確認”的情況下才會發生postback。對於刪除確認很好用。
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