Question

I have a questing regarding MSMQ…
I designed an async arhitecture like this:

CLient – > WCF Service (hosted in WinService) -> MSMQ

so basically the WCF service takes the requests, processes them, adds them to an INPUT queue and returns a GUID. The same WCF service (through a listener) takes first message from queue (does some stuff…) and then it puts it back into another queue (OUTPUT).

The problem is how can I retrieve the result from the OUTPUT queue when a client requests it… because MSMQ does not allow random access to it’s messages and the only solution would be to iterate through all messages and push them back in until I find the exact one I need. I do not want to use DB for this OUTPUT queue, because of some limitations imposed by the client…

Answer 1

You can look in your Output-Queue for your message by using

var mq = new MessageQueue(outputQueueName);
mq.PeekById(yourId);

Receiving by Id:

mq.ReceiveById(yourId);