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MSMQ

I'm starting to play with MSMQ and have a really newbie question...

I can effectively write to my Queue with no problem. However, what event is
raised when something is added to the queue. Currently, I'm polling the
queue to see if it has anything in it and then processing accordingly. But
that seems like an awkward way to handle messages b/c I might interrogate
the queue x number of times when there's nothing in it. If I could just
wake up the client app when anything is added to the queue, it seems like
it'd be much better solution.

Is there a way to do this, namely, for the queue to send a notification that
something has been added or that it has stuff in it?

TIA,

Bill

--
Cordially,

W.G. Ryan
do********@comcast.nospam.net
www.devbuzz.com
www.knowdotnet.com
Jul 21 '05 #1
6 1561
One way is to implement a windows service which incorporates Timer object
for checking the Queue and notifies the other components in case of new
message.

"William Ryan" <do********@nospam.comcast.net> wrote in message
news:uW**************@TK2MSFTNGP11.phx.gbl...
I'm starting to play with MSMQ and have a really newbie question...

I can effectively write to my Queue with no problem. However, what event is raised when something is added to the queue. Currently, I'm polling the
queue to see if it has anything in it and then processing accordingly. But that seems like an awkward way to handle messages b/c I might interrogate
the queue x number of times when there's nothing in it. If I could just
wake up the client app when anything is added to the queue, it seems like
it'd be much better solution.

Is there a way to do this, namely, for the queue to send a notification that something has been added or that it has stuff in it?

TIA,

Bill

--
Cordially,

W.G. Ryan
do********@comcast.nospam.net
www.devbuzz.com
www.knowdotnet.com

Jul 21 '05 #2
Take a look at MSMQ triggers.

Willy.

"William Ryan" <do********@nospam.comcast.net> wrote in message news:uW**************@TK2MSFTNGP11.phx.gbl...
I'm starting to play with MSMQ and have a really newbie question...

I can effectively write to my Queue with no problem. However, what event is
raised when something is added to the queue. Currently, I'm polling the
queue to see if it has anything in it and then processing accordingly. But
that seems like an awkward way to handle messages b/c I might interrogate
the queue x number of times when there's nothing in it. If I could just
wake up the client app when anything is added to the queue, it seems like
it'd be much better solution.

Is there a way to do this, namely, for the queue to send a notification that
something has been added or that it has stuff in it?

TIA,

Bill

--
Cordially,

W.G. Ryan
do********@comcast.nospam.net
www.devbuzz.com
www.knowdotnet.com

Jul 21 '05 #3
Ali:

Thanks for the suggestion, that's actually what I have now....I have a
background thread and a timer in it that's doing the polling , and it
definitely works. I was just wondering if the Queue had anything inherent
in it to notify me.
BTW, I noticed you earned the MCAD. I've been thinking about it for a
while...can you recommend any study material?

Thanks again,

Bill
"Ali Mazaheri [MCAD]" <ae**************@NOSPAMhotmail.com> wrote in message
news:ep**************@TK2MSFTNGP10.phx.gbl...
One way is to implement a windows service which incorporates Timer object
for checking the Queue and notifies the other components in case of new
message.

"William Ryan" <do********@nospam.comcast.net> wrote in message
news:uW**************@TK2MSFTNGP11.phx.gbl...
I'm starting to play with MSMQ and have a really newbie question...

I can effectively write to my Queue with no problem. However, what event
is
raised when something is added to the queue. Currently, I'm polling the
queue to see if it has anything in it and then processing accordingly.

But
that seems like an awkward way to handle messages b/c I might

interrogate the queue x number of times when there's nothing in it. If I could just
wake up the client app when anything is added to the queue, it seems like it'd be much better solution.

Is there a way to do this, namely, for the queue to send a notification

that
something has been added or that it has stuff in it?

TIA,

Bill

--
Cordially,

W.G. Ryan
do********@comcast.nospam.net
www.devbuzz.com
www.knowdotnet.com


Jul 21 '05 #4
That's exactly what I needed..... Many many thanks!
"Willy Denoyette [MVP]" <wi*************@pandora.be> wrote in message
news:%2***************@TK2MSFTNGP10.phx.gbl...
Take a look at MSMQ triggers.

Willy.

"William Ryan" <do********@nospam.comcast.net> wrote in message

news:uW**************@TK2MSFTNGP11.phx.gbl...
I'm starting to play with MSMQ and have a really newbie question...

I can effectively write to my Queue with no problem. However, what event is raised when something is added to the queue. Currently, I'm polling the
queue to see if it has anything in it and then processing accordingly. But that seems like an awkward way to handle messages b/c I might interrogate the queue x number of times when there's nothing in it. If I could just
wake up the client app when anything is added to the queue, it seems like it'd be much better solution.

Is there a way to do this, namely, for the queue to send a notification that something has been added or that it has stuff in it?

TIA,

Bill

--
Cordially,

W.G. Ryan
do********@comcast.nospam.net
www.devbuzz.com
www.knowdotnet.com


Jul 21 '05 #5
If you use .NET Framework (as I suspect so since you post here) you can use
async programming. Look att BeginReceive / EndReceive in the MessageQueue
class. Read more at
http://msdn.microsoft.com/library/de...asp?frame=true

In fact, that whole chapter might be interesting for you.
http://msdn.microsoft.com/library/de...asp?frame=true

Also there is at least one other article about MSMQ and services at
http://msdn.microsoft.com/library/de...asp?frame=true
"William Ryan" <do********@nospam.comcast.net> wrote in message
news:uW**************@TK2MSFTNGP11.phx.gbl...
I'm starting to play with MSMQ and have a really newbie question...

I can effectively write to my Queue with no problem. However, what event is raised when something is added to the queue. Currently, I'm polling the
queue to see if it has anything in it and then processing accordingly. But that seems like an awkward way to handle messages b/c I might interrogate
the queue x number of times when there's nothing in it. If I could just
wake up the client app when anything is added to the queue, it seems like
it'd be much better solution.

Is there a way to do this, namely, for the queue to send a notification that something has been added or that it has stuff in it?

TIA,

Bill

--
Cordially,

W.G. Ryan
do********@comcast.nospam.net
www.devbuzz.com
www.knowdotnet.com

Jul 21 '05 #6
Thank you.
"Rolf Enidsson" <ro***********@re-m-ove.msecf.rem-ove.com> wrote in message
news:eG**************@TK2MSFTNGP12.phx.gbl...
If you use .NET Framework (as I suspect so since you post here) you can use async programming. Look att BeginReceive / EndReceive in the MessageQueue
class. Read more at
http://msdn.microsoft.com/library/de...asp?frame=true
In fact, that whole chapter might be interesting for you.
http://msdn.microsoft.com/library/de...asp?frame=true
Also there is at least one other article about MSMQ and services at
http://msdn.microsoft.com/library/de...asp?frame=true

"William Ryan" <do********@nospam.comcast.net> wrote in message
news:uW**************@TK2MSFTNGP11.phx.gbl...
I'm starting to play with MSMQ and have a really newbie question...

I can effectively write to my Queue with no problem. However, what event
is
raised when something is added to the queue. Currently, I'm polling the
queue to see if it has anything in it and then processing accordingly.

But
that seems like an awkward way to handle messages b/c I might

interrogate the queue x number of times when there's nothing in it. If I could just
wake up the client app when anything is added to the queue, it seems like it'd be much better solution.

Is there a way to do this, namely, for the queue to send a notification

that
something has been added or that it has stuff in it?

TIA,

Bill

--
Cordially,

W.G. Ryan
do********@comcast.nospam.net
www.devbuzz.com
www.knowdotnet.com


Jul 21 '05 #7

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