Called when the observer has been detached from a subject either by calling Detach or because the subject is being disposed.

void SubjectDetached(
	int subjectId,
	SubjectDetachReason reason
)

Sub SubjectDetached ( _
	subjectId As Integer, _
	reason As SubjectDetachReason _
)

void SubjectDetached(
	int subjectId, 
	SubjectDetachReason reason
)