You receive an error message when you perform asynchronous receive operations on a Message Queuing dependent client (816497)

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To prevent IAsyncResult objects from being garbage collected, put them in an ArrayList class. The following Microsoft Visual Basic .NET code illustrates how to do so:

Public Sub EnableNotifications()
	Dim mq as new MessageQueue("server\queue")
	AddHandler mq.ReceiveCompleted, AddressOf HandleReceiveCompleted
	Dim result as IAsyncResult
	result = mq.BeginReceive()
	asyncList.Add(result) // asyncList is a global variable of type System.Collections.ArrayList()
End Sub

Public Sub HandleReceiveCompleted(ByVal sender As Object, ByVal e As ReceiveCompletedEventArgs)
	Dim m as Message
	Dim mq as MessageQueue = CType(sender, MessageQueue)
	m = mq.EndReceive(e.AsyncResult)
 // Code to handle message goes here.
End Sub

The following Microsoft Visual C# .NET code illustrates how to do so:

public void EnableNotifications()
		{
			MessageQueue mq = new MessageQueue("server\queue");
			mq.ReceiveCompleted += new ReceiveCompletedEventHandler(mq_ReceiveCompleted);
   IAsyncResult result = mq.BeginReceive();
			asyncList.Add(result); // asyncList is a global variable of type System.Collections.ArrayList()
  }

		public void mq_ReceiveCompleted(object sender, System.Messaging.ReceiveCompletedEventArgs e)
		{
			MessageQueue mq = (MessageQueue)sender;
			System.Messaging.Message m = mq.EndReceive(e.AsyncResult);
   // Code to handle message goes here.
		}