Hi Max,
There is no universally best way to do that - it depends on the
requirements.
My understanding is, you want to print PDF files unattended by calling
Adobe Acrobat Reader from within your service and no user interaction is
needed. If I got it wrong, please correct me.
That raises a problem in the first place: Does Adobe Acrobat Reader support
running under a service account (like SYSTEM or LocalService or
NetworkService)? I think you need to get the answer to this question from
Adobe then we can proceed to the next step.
Another consideration would be the printer, if you're using a remote
printer on the network, usually the account running your service is not
aware of this kind of printers. You'll have to install the printer locally.
If your service only will print PDF files when an interactive user is
logged on in the system, then you can use CreateProcessAsUser function to
run the Acrobat Reader process on that user's desktop. See:
http://msdn.microsoft.com/en-us/library/ms682429(VS.85).aspx
Or you can use a server/client model to have the job done: make another
application running on the interactive user's desktop, use Remoting or some
other cross process communication technologies to let the print command go
through from the service to the client application. Then the client
application can run the Acrobat Reader to do the print job.
See:
http://support.microsoft.com/kb/327618/
These are my first thoughts with not enough information available from you.
If you could describe more details about what exactly your application need
to do, then I can give more specific information on this topic.
Thanks,
Jie Wang
Microsoft Online Community Support
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