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[IvanTsoi]

I install a plug in (DualSelectListBox.dll) in lib that can product a DualSelectListBox in a web page.

the following is the Header
<%@ Register TagPrefix="cc1" Namespace="Skynet" Assembly="DualSelectListBox" %>
.........


I replaced the DualSelectListBox inside a panel

<Panel1>
......
<cc1ualSelectListBox id="DualSelectListBox1" runat="server" Width="750px" >....</cc1ualSelectListBox>
......
</Panel1>

Then use a LINKBUTTON to call an event
<asp:LinkButton id="Linkbutton4" onclick="OKClick" runat="server" />

But I find it cannot fire when I push the linkButton unless I replace the linkbutton as button or put the DualSelectListBox outside the panel.

It was OK in ASP.net1.0. But when Upgrade to 2.0, it is out of order.