DllImport to unmanaged

[flemming eriksen]

Hello NG

From a Web Project (C#, XP-box) I want to call unmanaged code :

so

[DllImport("mydll.dll", EntryPoint="FirstFunc")]
private static extern int FirstFunc();

BUT when I in my C# prog call FirstFunc(), I get "Unable to load dll
(mydll)"
I have copied mydll.dll from a to b without success.

So where should the dll be located and which access-rights should it be
equiped with?
(haven't found the rules)


Thanks,
flemming

[Paul Glavich [MVP ASP.NET]]

It should be in either the /bin directory or in c:\windows\system32
directory. You will need to grant the "interop" permission as well as by
default, web apps cannot access interop code. You can do this via the .Net
framework configuration inthe policy section, and allow interop for the
machine group.

--

- Paul Glavich
ASP.NET MVP
ASPInsider ([url]www.aspinsiders.com[/url])


"flemming eriksen" <flericsson@kabnosapma.com> wrote in message
news:O1HQredDFHA.2676@TK2MSFTNGP12.phx.gbl...

> Hello NG
>
> From a Web Project (C#, XP-box) I want to call unmanaged code :
>
> so
>
> [DllImport("mydll.dll", EntryPoint="FirstFunc")]
> private static extern int FirstFunc();
>
> BUT when I in my C# prog call FirstFunc(), I get "Unable to load dll
> (mydll)"
> I have copied mydll.dll from a to b without success.
>
> So where should the dll be located and which access-rights should it be
> equiped with?
> (haven't found the rules)
>
>
> Thanks,
> flemming
>
>
>