App下載
實例代碼( Tip: 登錄后體驗更佳 )
<html>
<body>
<form runat="server">
<asp:DropDownList id="dd" runat="server"
AutoPostBack="True" onSelectedIndexChanged="displayMessage" />
<p><asp:label id="lbl1" runat="server" /></p>
</form>
</body>
</html>
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運行結(jié)果