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Message queue - cum sa oprim consumul de message dintr-un queue

Pornim de la următorul caz:
Avem o aplicatie ce ruleaza 24h pe zi, 7 zile pe saptamana. Aceasta consuma mesaje din mai multe queue. Pentru a putea asculta la queue avem următorul cod:
System.Messaging.MessageQueue msmq = new MessageQueue(".\\private$\\exemplu");
msmq .ReceiveCompleted += m_ReceiveCompleted;
msmq .BeginReceive();
...
void m_ReceiveCompleted(object sender, ReceiveCompletedEventArgs e)
{
Console.WriteLine(DateTime.Now.ToString());

MessageQueue msmq = (MessageQueue) sender;
msmq.BeginReceive();
}
Intr-un anumit moment, dorim sa oprim consumul de mesaje din queue. Pentru acest lucru apelam
msmq.Close()
Dar avem o surpriza. Mesajele sunt în continuare consuma de către aplicație. Orice am face sau apela acestea sunt în continuare consumate. Pe msdn dacă citim cu atenție pagina care descrie metoda Close() o sa gasim
Close does not always free the read and write handles to a queue, because they might be shared.
Deși pare ciudat la prima vedere metoda Close() eliberează resursele folosite de instanta. Nu oprește instanta sa nu mai consume și alte mesaje din queue.
Solutia pe care o propun este sa ne dezabonam de la evenimentul de ReceiveCompleted înainte sa apelam Close():
msmq.ReceiveCompleted -= m_ReceiveCompleted;
msmq.Close();
O alta solutie ati putea spune ce este ca în metoda ReceiveCompleted sa nu mai apelam BeginReceive() cînd anumite condiții sunt îndeplinite. Problema in cazul acesta ar fi ca noi deja am consuma un mesaj de pe queue, deși poate nu ar trebuii sa consuma mesajul respectiv.
Aceasta problema se poate manifesta și în cadrul unit test-elor, cînd mesajele din queue dispar pur și simplu și nu mai ajung la cine trebuie( cazul în care în mai multe unit teste consuma același queue, iar instantele la MessageQueue sunt statice).

Voi aveți alte soluții la aceasta problema?

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