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protected virtual void OnCollectionChanged(
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:
// OnCollectionChanged call
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