microsoft.public.dotnet.framework.aspnet.webservices

Daryl Davis

6/14/2004 7:43:00 PM

This appears to be a simular issue to mine. Works great except when I call
it from a WebService.
Daryl Davis
"Chris Bardon" <cmbardon@engmail.uwaterloo.ca> wrote in message
news:5c2b81.0406140612.7b94aaf5@posting.google.com...
> I have some code in an unmanaged DLL that I want to call from a web
> service. What I've done is use DLLIMPORT statements to create a
> wrapper class like so:
>
> public class Import
> {
> [DllImport("unmanaged.dll")] public static extern short Fn1(short
> s);
> }
>
> And called it like so:
>
> Import.Fn1(5);
>
> I've placed the unmanaged.dll file in the path, and have used this
> code in a local windows forms app with no problems. When I try to
> place this same code in a web service though, I get a
> System.DLLNotFoundException saying that it is unable to load the
> managed DLL. I've tried placing copies of the DLL in various
> locations (web service bin directory, wwwroot, etc) with no
> improvements.
>
> Thinking it might be a security problem, I tried running my windows
> forms app as a different user, and confirmed that both the anonymous
> web service user and the ASPNET account were able to run the program
> and find the DLL. Is there another configuration issue here that I'm
> missing? There should be no reason that I can't use this DLL in this
> way, correct?