A simple MSMQ Listener helper class

re: A simple MSMQ Listener helper class

Sloan — Wed, 03 Oct 2007 14:16:39 GMT

//Quote//

I am using the same code and created windows services in my local system but if i run my windows service to receive the message. Access denaid the error message i got.

Can u specify the the format name for the Queue Path. Or any security setting has to be enabled.

//End Quote

You have to go thru "Manage Computer" and find the Queue. And give permissions ON THE QUEUE...to the "SYSTEM" account (the SYSTEM account local to that computer).

You don't have to do "Full Control", but Send/Receive are necessary. I usually give Get/Set Permissions as well.

re: A simple MSMQ Listener helper class

JM — Wed, 08 Aug 2007 01:55:36 GMT

I worte a Q listener as a window service, it is working for read the local transactional Q. But when I cluster the MSMQ, the Q listenser service can not read the Q any more.

any idea why?

re: A simple MSMQ Listener helper class

Filip — Mon, 04 Jun 2007 02:08:13 GMT

Nice code, would you be able to provide an example of the test class as well on how to call this? (Sorry, I'm a c# beginner)

re: A simple MSMQ Listener helper class

Rahul — Thu, 01 Mar 2007 05:11:25 GMT

I am using the same code and created windows services in my local system but if i run my windows service to receive the message. Access denaid the error message i got.

Can u specify the the format name for the Queue Path. Or any security setting has to be enabled.

re: A simple MSMQ Listener helper class

Manoj G — Sat, 02 Dec 2006 14:48:11 GMT

Hi Akshay,

Transactional Receive should solve your problem.

Thanks,

Manoj

re: A simple MSMQ Listener helper class

Dharan Prakash — Fri, 01 Dec 2006 11:50:36 GMT

Hi Manoj,

Can you please give me an answer or references for Akshay's question? i.e

Server A and Server B are listening to the same queue, will both the servers recieve an event when a messge arrives on the queue. Yes they would. - How can I ask one of the servers to process and the other to stand down...

Thanks

re: A simple MSMQ Listener helper class

sloan — Mon, 18 Sep 2006 21:56:47 GMT

Ravi, I was able to put the fix in this way: In the OnPeekCompletedMethod .. I added the following (extra exception handling) code: catch (MessageQueueException msmqex) { switch ( (int)msmqex.MessageQueueErrorCode ) { case -1073741536: Console.WriteLine("Msmq Error -1073741536 : Sleeping, and then ReListening"); System.Threading.Thread.Sleep(3000); StartListening(); break; default: trans.Abort(); throw msmqex; //break; } } catch { trans.Abort(); } The issue is that there is a missing enum value for -1073741536 See this url: http://www.koders.com/csharp/fidE632059BF610D9D912C019A96DCF7A2DD76C847F.aspx

Wow. Thanks!

sloan — Fri, 21 Jul 2006 21:10:23 GMT

manoj g,

thanks.. that really, really helps with my msmq development.

I added one overloaded constructor.... since I binary format my objects. (below)
(and theres a small spelling error: FireReceiveEvent)

but minus my caveat, this thing works great.

There's probably a hole with .. if you use the overload and set the Types[] , so don't trust my implementation too far.

public MSMQListener(string queuePath)
{
this.ConstructorCommon(queuePath);
}

private void ConstructorCommon(string queuePath)
{
_queue = new MessageQueue(queuePath);

//non manoj stuff//MessageQueue.EnableConnectionCache = false;
//non manoj stuff//this._queue.SetPermissions("Everyone", MessageQueueAccessRights.FullControl, AccessControlEntryType.Allow);
}

public MSMQListener(string queuePath , System.Messaging.IMessageFormatter formatter)
{
this.ConstructorCommon(queuePath);
this._queue.Formatter = formatter; // Customize the formatter type
}

re: A simple MSMQ Listener helper class

Ravi — Tue, 27 Jun 2006 11:44:34 GMT

Hi,

i am tryig to do an async peek, by calling BeginPeek, the Peek Complete event get triggered immediatly after a call to BeginPeek, even though the Queue is empty.
and when endPeek is called, it throws an exception, with no message, but, it has a MessageQueueErrorCode : 0xC0000120

I was getting this exception.
Then after Searching found ur code. then again i am getting the same exception.
Any Idea?

Regards
B, Ravi Shankar

re: A simple MSMQ Listener helper class

akshay — Tue, 25 Apr 2006 14:45:39 GMT

Thats cool...
I was looking at creating a MSMQ listner... This will help a lot.

One question I have : Is can you share any ideas; if I wish to create multiple listener to the same queue, is there are way to synchronize these listners sitting on different machines...
i.e.
Server A and Server B are listening to the same queue, will both the servers recieve an event when a messge arrives on the queue. Yes they would. - How can I ask one of the servers to process and the other to stand down...

Any Ideas ???

Thanks
Akshay.