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No exception occured while sending message into deleted queue

The following sample applicationworks on .Net Framework 2.0 anddoesn't raise any exception.

Is it a bug? Is there any workaround?

using System;



namespace MQDeleteTest

{

    class Program

    {

        static void Main(string[] args)

        {

            try

            {

                // Local public queue.

                string queuePath = ".\\TestQueue";



                System.Messaging.MessageQueue.Create(queuePath);



                System.Messaging.MessageQueue queue =

                    new System.Messaging.MessageQueue(queuePath, false, false);



                queue.Send("A test message 1.");



                System.Messaging.MessageQueue.Delete(queuePath);



                // an exception expected!!!

                queue.Send("A test message 2.");

            }

            catch (Exception ex)

            {

                Console.WriteLine(ex);

            }

        }

    }

}

Antokha

failed messages go to the dead letter queue, no exception is generated. Read more here: http://msdn.microsoft.com/en-us/library/ms789035.aspx

Proposed As Answer byeryangMSFT, ModeratorTuesday, September 15, 2009 3:55 AM
Unproposed As Answer byeryangMSFT, ModeratorTuesday, September 15, 2009 3:55 AM

Vapor

Unfortunately, in this sample a message sent to a local queue doesn't go to the dead letter queue.

If the line "queue.Send("A test message 1.");" is commented than the sending of the message 2 will cause an exception.

Antokha

queue.Send("A test message 1.") will trigger resource allocation operations on the queue, close the queue before delete and you will get the expected exception:

// Local public queue.
string queuePath = ".\\TestQueue";
System.Messaging.MessageQueue.Create(queuePath);
System.Messaging.MessageQueue queue = new System.Messaging.MessageQueue(queuePath, false, false);

queue.Send("A test message 1.");
queue.Close();
System.Messaging.MessageQueue.Delete(queuePath);

// an exception expected!!!
queue.Send("A test message 2.");

Thanks,
Eric

Please remember to mark helpful replies as answers and unmark them if they provide no help.

Unmarked As Answer byAntokha Tuesday, September 22, 2009 8:09 PM
Marked As Answer byeryangMSFT, ModeratorThursday, September 17, 2009 2:23 AM
Proposed As Answer byeryangMSFT, ModeratorWednesday, September 16, 2009 12:56 AM

eryang

In the sample I don't need to close the queue before sending the second message.

And I also don't need to delete the queue - imagine that it is deleted by someone else, e.g. anexternal process.

I expect an exception fired when I'm sending a message through a queue which doesn't existbut it is not raised!

I just loose a message without any notification!

Antokha

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