CollectionChange CollectionChange CollectionChange CollectionChange Enum


Describes the action that causes a change to a collection.

public : enum class CollectionChangepublic enum CollectionChangePublic Enum CollectionChange// You can use this enum in JavaScript.
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.FoundationContract (introduced v1)


There is only one notification per type of change to a collection. For example, if an item is inserted, then only a notification for an insertion is sent to a listener that is subscribed to receive change notifications. Use the Index property of the IVectorChangedEventArgs interface or the Key property of the IMapChangedEventArgs; interface to determine the location of the change.


ItemChanged ItemChanged ItemChanged ItemChanged

An item is changed in the collection.

ItemInserted ItemInserted ItemInserted ItemInserted

An item is added to the collection.

ItemRemoved ItemRemoved ItemRemoved ItemRemoved

An item is removed from the collection.

Reset Reset Reset Reset

The collection is changed.