question about MessageQueue

[Charles Shao]

question about MessageQueue

Hi, friends:

I try to send a message into MSMQ and then read it out.
But I find the message is not be removed after being accessed.
How can I read and remove it ?

Thanks

Charles Shao
=============== =============== =============== =============== ====
myNewPrivateQue ue1.Send("My message data.",
MessageQueueTra nsactionType.Si ngle);
MessageEnumerat or myEnumerator =
myNewPrivateQue ue1.GetMessageE numerator();

// Specify that the messages's priority should be read.
myNewPrivateQue ue1.MessageRead PropertyFilter. Priority = true;

// Move to the next message and examine its priority.
while(myEnumera tor.MoveNext())
{
// Increase the count if priority is Lowest.
if(myEnumerator .Current.Priori ty ==
MessagePriority .Lowest)

Console.WriteLi ne("Received MSG: " +
myEnumerator.Cu rrent.Body.ToSt ring());
}

[CSharper]

Re: question about MessageQueue

Charles,

The MessageEnumerat or provides a forward-only cursor to enumerate through
messages in a message queue. In other words, you can view them, but you
can't remove them. In order to remove them, you need to get a reference to
the queue the message is in.
In your case, if myNewPrivateQue ue1 is that reference, you can simply call
the Receive method like this:

myNewPrivateQue ue1.Receive();

Keep in mind that queues are just that, queues. They operate in a FIFO
(First-in first-out) manner. So when you call receive, you're essentially
getting the message that has been waiting the longest (and has the highest
priority as I understand it).

Hope this helps,

Dan Cox
DISCLAIMER: This *should* work. =)


"Charles Shao" <adadad@263.net > wrote in message
news:eu4mPa6SFH A.3392@TK2MSFTN GP12.phx.gbl...[color=blue]
> question about MessageQueue
>
> Hi, friends:
>
> I try to send a message into MSMQ and then read it out.
> But I find the message is not be removed after being accessed.
> How can I read and remove it ?
>
> Thanks
>
> Charles Shao
> =============== =============== =============== =============== ====
> myNewPrivateQue ue1.Send("My message data.",
> MessageQueueTra nsactionType.Si ngle);
> MessageEnumerat or myEnumerator =
> myNewPrivateQue ue1.GetMessageE numerator();
>
> // Specify that the messages's priority should be read.
> myNewPrivateQue ue1.MessageRead PropertyFilter. Priority = true;
>
> // Move to the next message and examine its priority.
> while(myEnumera tor.MoveNext())
> {
> // Increase the count if priority is Lowest.
> if(myEnumerator .Current.Priori ty ==
> MessagePriority .Lowest)
>
> Console.WriteLi ne("Received MSG: " +
> myEnumerator.Cu rrent.Body.ToSt ring());
> }
>
>
>[/color]

[Charles Shao]

Re: question about MessageQueue

Thank you very much :-)
I will go to have a try

"CSharper" <dont@botherme. com> дÈëÓʼþ
news:8lZbe.1387 33$vL3.55996@bi gnews4.bellsout h.net...[color=blue]
> Charles,
>
> The MessageEnumerat or provides a forward-only cursor to enumerate through
> messages in a message queue. In other words, you can view them, but you
> can't remove them. In order to remove them, you need to get a reference to
> the queue the message is in.
> In your case, if myNewPrivateQue ue1 is that reference, you can simply call
> the Receive method like this:
>
> myNewPrivateQue ue1.Receive();
>
> Keep in mind that queues are just that, queues. They operate in a FIFO
> (First-in first-out) manner. So when you call receive, you're essentially
> getting the message that has been waiting the longest (and has the highest
> priority as I understand it).
>
> Hope this helps,
>
> Dan Cox
> DISCLAIMER: This *should* work. =)
>
>
> "Charles Shao" <adadad@263.net > wrote in message
> news:eu4mPa6SFH A.3392@TK2MSFTN GP12.phx.gbl...[color=green]
> > question about MessageQueue
> >
> > Hi, friends:
> >
> > I try to send a message into MSMQ and then read it out.
> > But I find the message is not be removed after being accessed.
> > How can I read and remove it ?
> >
> > Thanks
> >
> > Charles Shao
> > =============== =============== =============== =============== ====
> > myNewPrivateQue ue1.Send("My message data.",
> > MessageQueueTra nsactionType.Si ngle);
> > MessageEnumerat or myEnumerator =
> > myNewPrivateQue ue1.GetMessageE numerator();
> >
> > // Specify that the messages's priority should be read.
> > myNewPrivateQue ue1.MessageRead PropertyFilter. Priority = true;
> >
> > // Move to the next message and examine its priority.
> > while(myEnumera tor.MoveNext())
> > {
> > // Increase the count if priority is Lowest.
> > if(myEnumerator .Current.Priori ty ==
> > MessagePriority .Lowest)
> >
> > Console.WriteLi ne("Received MSG: " +
> > myEnumerator.Cu rrent.Body.ToSt ring());
> > }
> >
> >
> >[/color]
>
>[/color]