CollectionChangedAction

Specifies the action that caused a collection changed event.

Members

• Add
  An item was added to the collection.
• Remove
  An item was removed from the collection.
• Replace
  An item in the collection was replaced.
• Move
  An item in the collection was moved to a different location.
• Reset
  The collection changed in a way that cannot be described by any other action. For example, all items were removed from the collection.

Remarks

The CollectionChangedAction enumeration is used by the NotifyCollectionChangedEventHandler delegate to specify the action that caused the collection changed event.

Typically, you will use the members of this enumeration when implementing observable collections, such as ObservableCollection<T>.

Syntax

public enum CollectionChangedAction { Add, Remove, Replace, Move, Reset }

See Also

• NotifyCollectionChangedEventArgs
• NotifyCollectionChangedEventHandler
• ObservableCollection<T>
• System.Collections Namespace