Updating one updatepanle data from other updatepanel

I have a september ctp atlas dll. We have one updatepanel with timer which fires every 5 seconds & get application variable data from server.In second updatepanel we have a treeview which we want to update only if value in application variable changes.If we put timer in treeview updatepanel then treeview refreshes with images,nodes which we do not want.Can we add nodes in treeview from another updatepanel.Unfortunately, the treeview is not yet supported (as well as some other databound controls that use templates)...There are some hacks you can try in the meantime...for instance the gridview when template is not supposed to be supported but I have managed to get it to work by using a combinations of controls...another good post to read is this...

urgent: Modal popup Extender is not closing after validation fires

I have an edit modalpopupextender inside the gridview that appear when linkbutton is clicked all of this inside an update panel and its working great.

when the modalpopupextender popsup i have two buttons "Close" and "Save" button and when the user click on "Close" it closes the modalpopupextender - again its working great.

but the problem isthat, when i click on "Save" button it FIRES validation and in the modalpoupextender i have twocustomvalidation controlsthat validates whether the user have check at least one checkbox or not so when the user hit on "Save" button the validation fires whic is great so far butwhen i clik on "Close" button its not closing my modalpopuextender ?

here is my close button looks like:

<ajaxToolkit:ModalPopupExtender ID="mpePerson" runat="server" TargetControlID="btnHiddenPerson"
PopupControlID="pnlPerson" OkControlID="bModalDialogCancel"CancelControlID="bModalDialogCancel" BackgroundCssClass="modalBackground"
PopupDragHandleControlID="PersonCaption">
</ajaxToolkit:ModalPopupExtender>

<asp:ButtonCausesValidation="false"ID="bModalDialogCancel" runat="server"Text=" Close "ToolTip="Close this window"/>

what is going on here?

You have your OkControlID and your CancelControlID both pointing to the same button ('bModalDialogCancel').

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i fixed myself, i was passing the wrong id.

thanks.