How to display row numbers in a ListView?

Question

The obvious solution would be to have a row number property on a ModelView element, but the drawback is that you have to re-generate those when you add records or change sor

Answer 1

By following best answer solution I found an issue when indexes still not updated after removing/replacing items inside list view. To solve that there is one not so clear hint (I propose to use it in small collections): after executing item removing/replacing you should invoke ObservableCollection(INotifyCollectionChanged).CollectionChanged event with Reset action. This is possible to make with extending existing ObservableCollection, which is ItemsSource or use reflection when this is not possible.

Ex.

public class ResetableObservableCollection : ObservableCollection
{
        public void NotifyReset()
        {
            OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
        }
}


private void ItemsRearranged() 
{
    Items.NotifyReset();
}