2 machines consuming MSMQ can duplicate messages ?

See more:

C#

C#4.0

threads

MSMQ

message

Hi
Basically, I'm using the class of .Net MessageQueue, I send a Message with FileName to a Queue, but I've received many errors from the Machines that consume the Queue like "File doesn't exist" or "FileNotFoundException". The machines supposed to delete the files.

If someone familiar with this code:

static void Main()
{
   for (int i = 0; i < 10; i++)
       ThreadPool.QueueUserWorkItem(new WaitCallback(ListenerMessage));
}

private void ListenerMessage(object o)
{
MessageQueue queueSouce = new MessageQueue("otherMachine\otherQueue");
queueSouce.Formatter = new XmlMessageFormatter(new Type[] { typeof(XmlDocument) });

queueSouce.ReceiveCompleted += new ReceiveCompletedEventHandler(queueSouce_ReceiveCompleted);
queueSouce.BeginReceive();
}

void queueSouce_ReceiveCompleted(object sender, ReceiveCompletedEventArgs e)
{
 ...
}

My theory in here is I'm using many threads in many machines connected with MessageQueue that start duplicate my messages, and when two computers receive the same message one of them will throw a exception that "file is using by another process" or "the file not found", etc

Someone can help me ?