Message queue looping

Question

I have a console app in c# and I am trying to receive a message from a message queue until the message queue is empty. So something like,

MessageQueue queue = new MessageQueue();
While(queue.notempty)
{
    queue.receive(...)
}

How can I do this?

Thanks.

Answer 1

There is no way to check whether queue is empty or not. You have to receive it this way:

private Message Receive(MessageQueue queue)
{
   try 
   {
      return queue.Receive(TimeSpan.Zero);
   }
   catch (MessageQueueException mqe)
   {
      if (mqe.MessageQueueErrorCode == MessageQueueErrorCode.IOTimeout)
         return null;
      throw;
   }
}

then you can do

MessageQueue queue = new MessageQueue();
Message msg;
while( (msg = Receive(queue)) != null)
{
    //process
}