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ReadOnlyObservableCollection(Of T).CollectionChanged Event

Occurs when an item is added or removed.

Namespace:  System.Collections.ObjectModel
Assembly:  WindowsBase (in WindowsBase.dll)

Protected Overridable Event CollectionChanged As NotifyCollectionChangedEventHandler
Dim handler As NotifyCollectionChangedEventHandler 

AddHandler Me.CollectionChanged, handler
You cannot use this event in XAML.

For more information, see CollectionChanged.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0