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我在網頁上工作，在那裏我有一些字段，並通過那希望生成氣球彈出懸停。生成是越來越成功，但氣球彈出不可見在運行時請幫幫我。 Balloon Popup Extender在運行時不可見
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager2" runat="server">
</asp:ScriptManager>
<table><tr><td>First Name:</td><td><asp:TextBox ID="txtfirst" runat="server"></asp:TextBox></td></tr>
<tr><td>Middle Name:</td><td><asp:TextBox ID="txtmiddlename" runat="server"></asp:TextBox></td></tr>
<tr><td>Last Name:</td><td><asp:TextBox ID="txtlast" runat="server"></asp:TextBox></td></tr>
</table>
<cc1:BalloonPopupExtender ID="BalloonPopupExtender1" runat="server" TargetControlID="txtfirst" BalloonPopupControlID="pan1" BalloonSize="Medium" BalloonStyle="Rectangle" DisplayOnMouseOver="true" UseShadow="true">
</cc1:BalloonPopupExtender>
<cc1:BalloonPopupExtender ID="BalloonPopupExtender2" runat="server" TargetControlID="txtmiddlename" BalloonPopupControlID="pan2" BalloonSize="Small" BalloonStyle="Cloud" DisplayOnMouseOver="true" >
</cc1:BalloonPopupExtender>
<cc1:BalloonPopupExtender ID="BalloonPopupExtender3" runat="server" TargetControlID="txtlast" BalloonPopupControlID="pan3" UseShadow="true" DisplayOnFocus="true" CustomClassName="oval" CustomCssUrl="~/CSS/Custom.css">
</cc1:BalloonPopupExtender>
<asp:Panel ID="pan1" runat="server">
Enter your First Name
</asp:Panel>
<asp:Panel ID="pan2" runat="server">
Enter your Middle Name
</asp:Panel>
<asp:Panel ID="pan3" runat="server">
Enter your Last Name
</asp:Panel>
</div>
</form>
</body>
</html>
我們需要看到一些代碼/錯誤消息才能夠幫助您。 – 2014-09-23 10:18:34
我已經連接了ajax dll ...也是<%--%>文本 – 2014-09-23 10:27:29
有沒有我的code.please中的任何錯誤讓我知道在此先感謝 – 2014-09-23 10:31:11