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POHow to programatically check if NServiceBus has finished processing all messages
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copied!<p>As part of an effort to automate starting/stopping some of our NServiceBus services, I'd like to know when a service has finished processing all the messages in it's input queue.</p> <p>The problem is that, while the NServiceBus service is running, <strong>my C# code is reporting one less message than is actually there</strong>. So it thinks that the queue is empty when there is still one message left. If the service is stopped, it reports the "correct" number of messages. This is confusing because, when I inspect the queues myself using the Private Queues view in the Computer Management application, it displays the "correct" number.</p> <p>I'm using a variant of the following C# code to find the message count:</p> <pre><code>var queue = new MessageQueue(path); return queue.GetAllMessages().Length; </code></pre> <p>I know this will perform horribly when there are many messages. The queues I'm inspecting should only ever have a handful of messages at a time.</p> <p>I have looked at <a href="https://stackoverflow.com/questions/3869022">other</a> <a href="https://stackoverflow.com/questions/3686312">related</a> <a href="https://stackoverflow.com/questions/10757333">questions</a>, but haven't found the help I need.</p> <p>Any insight or suggestions would be appreciated!</p> <p><strong>Update:</strong> I should have mentioned that this service is behind a Distributor, which is shut down before trying to shut down this service. So I have confidence that new messages will not be added to the service's input queue.</p>

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