Called when the active error selection is changed.
[Visual Basic .NET] Public Event OnActiveErrorsChanged As OnActiveErrorsChangedEventHandler
[C#] public event OnActiveErrorsChangedEventHandler OnActiveErrorsChanged
OnActiveErrorsChanged is fired whenever the topology error selection is modified. For example, this event is fired when ITopologyExtension::ClearActiveErrors, ITopologyExtension::AddActiveError, ITopologyExtension::RemoveActiveError are called; or if a topology error selection exists when the value of ITopologyExtension::CurrentTopology is changed. The method used to trigger the update also provides additional information pertaining to what operation was undertaken.