Hello Sheng,
Since you have a license, you can
open a support ticket here. This will allow me (or anyone else from the UI for Xamarin engineering team) to work with you a little more closely. A support ticket carries a guaranteed response time as well.
Pertaining to the question itself, you can either use the SelectionChanged event or use the ListView's bound ObservableCollection.
CollectionChanged event to see exactly what is occurring via the
NotifyCollectionChangedEventArgs.
As an example, here's a simple view model with a collection for the ListView ItemsSource. Notice the event handler for CollectionChanged. You can see what exactly happens to an item under each
Action condition:
Additionally in you can see what items were part of that action via the args other properties:
Lastly, if you're not using MVVM and want to do this in the code-behind, the RadListView.SelectionChanged event also uses NotifyCollectionChangedEventArgs, so you can use the same approach as above.
If you have any further trouble, open a support ticket, attach your problematic code and we'll dig deeper.
Regards,
Lance | Tech Support Engineer, Sr.
Telerik by Progress
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