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Hi,
I am using a RadExpander in the ItemTemplate of a RadDataBoundListBox. My application needs to change the contents of the whole list (by replacing the ItemsSource property): when this happens the expanders will retain the expanded state that they had in the previous list.
Is it possible to avoid this behavior and have the expanders all start at their initial state when the list items are replaced?
Thank you for your time,
Marco
I am using a RadExpander in the ItemTemplate of a RadDataBoundListBox. My application needs to change the contents of the whole list (by replacing the ItemsSource property): when this happens the expanders will retain the expanded state that they had in the previous list.
Is it possible to avoid this behavior and have the expanders all start at their initial state when the list items are replaced?
Thank you for your time,
Marco
1 Answer, 1 is accepted
0
Hello Marco,
Thanks for writing and for your question.
Yes, you can achieve this behavior by introduce a Boolean property on your Business Entity which you should bind (twoway mode) to the IsExpanded property of the Expander in your Data Template. This will allow you to always store the state in your ViewModel and have the expanders correctly displayed.
I hope this helps.
Regards,
Deyan
Telerik
Thanks for writing and for your question.
Yes, you can achieve this behavior by introduce a Boolean property on your Business Entity which you should bind (twoway mode) to the IsExpanded property of the Expander in your Data Template. This will allow you to always store the state in your ViewModel and have the expanders correctly displayed.
I hope this helps.
Regards,
Deyan
Telerik
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