MSMQ：MessageQueue.Close（）在.EndReceive（）处引发异常-1073741536

Question

I'm using MSMQ inside a Windows Service.
When the service is paused, I'd like to close MSMQ and reopen it when the service is resumed.

The code looks like this:

OnStart

_mq.ReceiveCompleted += this.ReceiveCompletedHandler;
_mq.BeginReceive();

OnPause

// MessageQueue.ClearConnectionCache();
_mq.Close();

OnContinue

same as OnStart

Now, this works BUT after .Close() an exception is thrown in the ReceiveCompletedHandler :

private void ReceiveCompletedHandler(object sender, ReceiveCompletedEventArgs e)
{
    Message message = this.mq.EndReceive(e.AsyncResult); // or e.Message
    // do stuff
}

Exception details:

Type: MessageQueueException
Message: null
ErrorCode: -2147467259
MessageQueueErrorCode: -1073741536

How do I prevent this from happening ?

Answer 1

David,

In your OnPause try do this before call Close() method:

_mq.ReceiveCompleted -= this.ReceiveCompletedHandler;