Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All

ObservableCollection(Of T).OnCollectionChanged Method

Raises the CollectionChanged event with the provided arguments.

Namespace:  System.Collections.ObjectModel
Assemblies:   System.ObjectModel (in System.ObjectModel.dll)
  System (in System.dll)

'Declaration
Protected Overridable Sub OnCollectionChanged ( _
	e As NotifyCollectionChangedEventArgs _
)

Parameters

e
Type: System.Collections.Specialized.NotifyCollectionChangedEventArgs

Arguments of the event being raised.

Properties and methods that modify this collection raise the CollectionChanged event through this virtual method.

When overriding this method, either call the base implementation or use the BlockReentrancy method to handle reentrant collection changes, as in the following example:

			Using BlockReentrancy()
				' OnCollectionChanged call
			End Using

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
Show:
© 2015 Microsoft