subscribe to msmq

Question

How to a subscribe to a queue in msmq using c#. Assuming i have a client as a win form and would like to subscribe to a que, everytime a message is arrived in the que i would like the form to be notified about it. Any example. Thanks

Answer 1

You need to look at the types in namespace System.Messaging.

There is full asynchronous support, so you can wait on a message arriving without halting your UI (but you'll need to use Control.BeginInvoke to call back into your UI as normal for asynchronous actions in WinForms).

MSDN has plenty of examples, e.g. of an asynchronous message receive.

Answer 2

You could also use WCF to subscribe to messages from an MSMQ queue and handle them as a service method in your WCF service.

Check out

• How to Exchange messages with WCF endpoints and message queueing applications
• WCF and MSMQ
• Sample starter project with WCF and MSMQ
• SOA'zing MSMQ with WCF (and why it's worth it)

Answer 3

As suggested by @marc_s you can use WCF service which can use either NetMSMQ or MSMQIntegrated binding to subscribe to messages in the MSMQ.

If you don't want to introduce WCF service between the Winforms application and the MSMQ, you'll need to build a polling mechanism to check into MSMQ for arrival of new messages.