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Transferred Items Duplicating

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Chris Salas
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Chris Salas asked on 24 May 2012, 10:30 PM
I have run into an issue here, i have 2 RadListBoxes on a page using the Transfer functionality.  The first RadListBox is bound on a SelectedIndexChanged event of a RadComboBox using an XML file.  I can transfer items to them with no issues.  The issue I am having is that when i hit a submit button on the page and the page posts back the transferred items are duplicating in the second RadListBox.  Has anyone seen this and overcome the issue?  I am also using the RadAjaxManager on the page and I think this is where the issue is coming from, when I remove the RadAjaxManager from the page it all seems to work.  Any ideas?

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Peter Filipov
Telerik team
answered on 25 May 2012, 08:56 AM
Hi Chris,

It is a common issue with the RadListBox control when the RadAjaxManager is used. Please make sure that the RadListBox control is updated by the RadAjaxManager on every ajax postback (which is connected to the RadListBox - e.g. add/transfer items).
If you still experience some issues please send me a working sample to investigate it locally.

Kind regards,
Peter Filipov
the Telerik team
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Chris Salas
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answered on 25 May 2012, 01:57 PM
That worked, thank you.  I had to add both ListBoxes as updated controls for every ajax setting of the Ajax manager.  That corrected the issue.
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Peter Filipov
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Chris Salas
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