如何实现MSMQ触发器

Question

Do anybody can solve my problem?

I wanna fire one event when some data is inserted in MSMQ queue how i can do it?

Answer 1

You create your instance of the message queue and start peeking at it asynchronously:

MessageQueue queue = new MessageQueue( @".\PRIVATE$\Queue" );
queue.BeginPeek( TimeSpan.Infinite, null, OnMessageAdded);

The registered callback is called when a message was added to the queue. As far as you did not explain what your real problem is, I assume you want to get informed about new messages added to the queue:

private void OnMessageAdded( IAsyncResult ar )
{
    Message peekedMessage = queue.EndPeek(ar);
    //Do whatever you want. Raise a new event, process the message, ...
}

The message is not taken off the queue. You can use the message, but it still remains in the queue. So if you don't need the Message, you can simply call queue.EndPeek(ar); without using the result.