In order to notify the UI that there is a new item in the database, your ItemsSource
collection must implement the INotifyCollectionChanged
interface. When you implement this interface the UI (the RadTreeView) will be automatically updated when you add an Item from code (e.g. another screen).
Please note that the ObservableCollection<T>
implements this interface and you can get advantage of it. I hope this information will help you. Don't hesitate to ask if you have any other questions.
Pavel R. Pavlov
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