Web service calling COM server

[ToddT]

I have some code in a regular client-based app that calls a COM component
hosted in an EXE. For the code to work, the EXE must be running. This works
fine.

When I place the same code in a Web service (using IIS on my local computer)
and I invoke the COM component, it starts up another instance of the EXE
rather than use the already running EXE like it does in my client-based app.
What I need it to do is use the existing running instance of the EXE like in
the client-based app.

Note - using GetObject instead of CreatObject had not effect on the
component instantiation.

Any help or guidance would be appreciated.

[Keenan Newton]

Re: Web service calling COM server

Well I am assuming CreateObject is kicking off a new COM object and
creating a new executable, as I would expect it to. So you want to use
the same EXE, one way to handle this might be to store the COM object
into applcation state. This way you can call the object whenever you
like. Are you using Component Services (COM+) as well?

One side note, I would be cautious about is using a single instance of
an EXE is the thread safety. What would happen if two calls are made
at the same time, can the COM object properly handle it?


Just my 2 cents, Hope this helps

[Keenan Newton]

Re: Web service calling COM server

Well I am assuming CreateObject is kicking off a new COM object and
creating a new executable, as I would expect it to. So you want to use
the same EXE, one way to handle this might be to store the COM object
into applcation state. This way you can call the object whenever you
like. Are you using Component Services (COM+) as well?

One side note, I would be cautious about is using a single instance of
an EXE is the thread safety. What would happen if two calls are made
at the same time, can the COM object properly handle it?


Just my 2 cents, Hope this helps