ReadOnlyObservableCollection<T> public class ReadOnlyObservableCollection<T> : ReadOnlyCollection<T>, INotifyCollectionChanged, INotifyPropertyChanged Documentation protected event NotifyCollectionChangedEventHandler CollectionChanged protected event PropertyChangedEventHandler PropertyChanged public ReadOnlyObservableCollection(ObservableCollection<T> list) protected virtual void OnCollectionChanged(NotifyCollectionChangedEventArgs args) protected virtual void OnPropertyChanged(PropertyChangedEventArgs args)