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INotifyCollectionChanged Interface

July 28, 2014

Notifies listeners of dynamic changes to a collection, such as when items are added and removed, or the entire collection object is reset.

Namespace:  System.Collections.Specialized
Assembly:  System (in System.dll)

public interface INotifyCollectionChanged

The INotifyCollectionChanged type exposes the following members.

  NameDescription
Public eventCollectionChangedOccurs when the items list of the collection has changed, or the collection is reset.
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INotifyCollectionChanged defines one member, CollectionChanged. The event data of this event (NotifyCollectionChangedEventArgs) reports information about the nature of the collection change.

To provide change notifications for bindings to ItemsControl and its subclasses, your collection must implement this interface. Before implementing your own collection class, consider using the ObservableCollection<T> class that implements INotifyCollectionChanged and INotifyPropertyChanged.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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