I want to create an application possibly windows service that will generate
PDF files and place them into a specific folder.
I have a website that will use this service to generate PDF files and return
them to user.

Is it possible to call this win service from within the website?
If yes how could we do this?

thanks
Lalit

It is much easier to communicate with the service via a file that the web 
app will write and the service will read.

-- 
Eliyahu Goldin,
Software Developer
Microsoft MVP [ASP.NET]
http://msmvps.com/blogs/egoldin
http://usableasp.net


"Lalit"  wrote in message 
news:eyt4Dmo3HHA.2108@TK2MSFTNGP02.phx.gbl...

>I want to create an application possibly windows service that will generate
> PDF files and place them into a specific folder.
> I have a website that will use this service to generate PDF files and 
> return
> them to user.
>
> Is it possible to call this win service from within the website?
> If yes how could we do this?
>
> thanks
> Lalit
>
> 

Hi Lalit,
the basic technique you are looking for is called RPC (remote procedure 
call) - in .net world it is known as remoting. But is this really what you 
need? Why do you need to run you pdf component as separate application?

Regards,
Ladislav

"Lalit" wrote:


> I want to create an application possibly windows service that will generate
> PDF files and place them into a specific folder.
> I have a website that will use this service to generate PDF files and return
> them to user.
> 
> Is it possible to call this win service from within the website?
> If yes how could we do this?
> 
> thanks
> Lalit
> 
> 
> 

"Lalit"  wrote in message 
news:eyt4Dmo3HHA.2108@TK2MSFTNGP02.phx.gbl...


>I want to create an application possibly windows service that will generate
> PDF files and place them into a specific folder.
> I have a website that will use this service to generate PDF files and 
> return
> them to user.
>
> Is it possible to call this win service from within the website?
> If yes how could we do this?


Following on from Ladislav' response, have you considered something like 
this: http://www.siberix.com ?

No need for a separate application at all...


-- 
Mark Rae
ASP.NET MVP
http://www.markrae.net

Hi,

Ladislav Mrnka wrote:

> Hi Lalit,
> the basic technique you are looking for is called RPC (remote procedure 
> call) - in .net world it is known as remoting. But is this really what you 
> need? Why do you need to run you pdf component as separate application?
> 
> Regards,
> Ladislav


Note however that if you go the "remoting" route, you should definitely 
take a good look at WCF (in .NET 3.0), which supercedes (and will 
eventually replace) remoting.

Greetings,
Laurent
-- 
Laurent Bugnion [MVP ASP.NET]
Software engineering, Blog: http://www.galasoft.ch
PhotoAlbum: http://www.galasoft.ch/pictures
Support children in Calcutta: http://www.calcutta-espoir.ch

"Eliyahu Goldin"  wrote  ..

> It is much easier to communicate with the service via a file that the web 
> app will write and the service will read.
>


I agree with this assessment. Given the vagaries of knowing how many web 
instances may be open at any time and the fact that there is only one web 
service active, a good methodology is to have the web page create a command 
file with the instructions for what to do a guid for a name in some format 
(xml perhaps) and have it place it into a "drop" directory.

The web service has a loop where it waits on changes in the drop directory 
and processes the files located there. Once processed they are deleted or 
moved to a 'processed' directory. This makes it easy to handle a large burst 
of activity, requests are just queued up and processed when the service gets 
to it and the service is not overwhelmed.

John
nice clean examples at www.nicecleanexamples.com



>
> "Lalit"  wrote in message 
> news:eyt4Dmo3HHA.2108@TK2MSFTNGP02.phx.gbl...
>>I want to create an application possibly windows service that will 
>>generate
>> PDF files and place them into a specific folder.
>> I have a website that will use this service to generate PDF files and 
>> return
>> them to user.
>>
>> Is it possible to call this win service from within the website?
>> If yes how could we do this?
>>
>> thanks
>> Lalit
>>
>>
>
> 

I have issues with the user rights while doing this. We are using a pdf 
printer driver to create pdf.
Using ASPNet user we cannot do this. we tried impersanation but it gives 
problem and that user has to be logged into the webserver while printing.
we tried WinAPI to call this but that did not work too.

So now we are trying to run this service outside of webserver (i.e. 
webserver will not start the exe). It will just request to do the job.

"Ladislav Mrnka"  wrote in message 
news:3B62E661-5964-4887-8E6F-A6081F7E45F7@microsoft.com...

> Hi Lalit,
> the basic technique you are looking for is called RPC (remote procedure
> call) - in .net world it is known as remoting. But is this really what you
> need? Why do you need to run you pdf component as separate application?
>
> Regards,
> Ladislav
>
> "Lalit" wrote:
>
>> I want to create an application possibly windows service that will 
>> generate
>> PDF files and place them into a specific folder.
>> I have a website that will use this service to generate PDF files and 
>> return
>> them to user.
>>
>> Is it possible to call this win service from within the website?
>> If yes how could we do this?
>>
>> thanks
>> Lalit
>>
>>
>>