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$find combo.clientid doesn't work in ajaxpanel

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Meng Zou
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Meng Zou asked on 22 Jan 2009, 11:09 PM
Hi, I have a ComboBox inside a ajaxPanel initially set to visible=false, after ajaxpanel postback, visible=true.

I can see the combo, but I can't get a hold of the the client side reference to the combo using $find('<%=combo.ClientID%>'), however, I am able to find the element using document.getElementById('<%=combo.ClientID%>').

anyone knows how to do this?

this link doesn't help, since ajaxPanel has no FindControl
http://www.telerik.com/help/aspnet-ajax/find-combobox-client-side-embedded-another-control.html

thanks

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Yana
Telerik team
answered on 23 Jan 2009, 01:12 PM
Hi Meng Zou,

When RadComboBox is invisible, you cannot get a client-side reference to it (it is not rendered). If it's visible, $find is supposed to work without a problem.

Kind regards,
Yana
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Meng Zou
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answered on 23 Jan 2009, 08:26 PM
i think i found the problem.

after the combo becomes visible in ajax panel (in my case, the asp:panel containing the combo becomes visible), the onClientSelectedIndexChanged event is triggered even before I touch the combo box.

so the event handler is triggered, and in the event handler, i have a $find('<%=combo.ClientID%>').get_value(), which fails to find the client combo reference since it's not created yet on client side.

i don't know why that event is triggered since no index was changed on clientside or server side, it probably shouldn't

--
i do have my reason to use $find('<%=combo.ClientID%>').get_value() in that event handler instead of 'sender'
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Yana
Telerik team
answered on 26 Jan 2009, 01:59 PM
Hi Meng Zou,

Could you please isolate the issue in a small working example and send it to us so we to be able to test it? You should open a support ticket in order to be able to attach files. Thanks

Regards,
Yana
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Meng Zou
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