Upgrading a C DLL to a .NET Library

[GeRmIc]

Hi,

I have a C DLL which i would like to import into my .NET service.
a) How do I convert the DLL so as to be refernced by a .NET service (I don't want to use PInovke)
b) I tried recreating the DLL in VS.NET as a VC# Class Library but I get this error - decleration of dllimport function not allowed.

Help!

[Nicholas Paldino [.NET/C# MVP]]

GeRmlc,

You can not do this. If you want to access functionality from a DLL
that exports functions, then you will have to go through the P/Invoke layer.

The other option is to rewrite the code in a managed language.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"GeRmIc" <an*******@discussions.microsoft.com> wrote in message
news:B4**********************************@microsof t.com...

Hi,

I have a C DLL which i would like to import into my .NET service.
a) How do I convert the DLL so as to be refernced by a .NET service (I don't want to use PInovke) b) I tried recreating the DLL in VS.NET as a VC# Class Library but I get this error - decleration of dllimport function not allowed.
Help!

[GeRmIc]

Hi Nicholas

Thanks, I'm now basically porting(copying with some minor modifications) the whole DLL to Visual C++ MFC ISAPI Extension DLL, Hoping I could then integrate that DLL into my .NET application but i keep getting this erro

'definition of dllimport function not allowed', i've tried prefixing _declspec(dllimport) to the function declarations but still..

Any advice? Thank

----- Nicholas Paldino [.NET/C# MVP] wrote: ----

GeRmlc

You can not do this. If you want to access functionality from a DL
that exports functions, then you will have to go through the P/Invoke layer

The other option is to rewrite the code in a managed language

Hope this helps
--
- Nicholas Paldino [.NET/C# MVP
- mv*@spam.guard.caspershouse.co

[Chad Z. Hower aka Kudzu]

=?Utf-8?B?R2VSbUlj?= <an*******@discussions.microsoft.com> wrote in
news:F2**********************************@microsof t.com:

Thanks, I'm now basically porting(copying with some minor modifications)
the whole DLL to Visual C++ MFC ISAPI Extension DLL, Hoping I could then
integrate that DLL into my .NET application but i keep getting this
error

'definition of dllimport function not allowed', i've tried prefixing
_declspec(dllimport) to the function declarations but still...

You are treating C# like C++ - its totally different. Only the general syntax
is the same.

DLL's are unmanaged code - you cannot just simply import them into managed
code. You need to use P/Invoke which will create a bridge from your managed
code to the unmanaged DLL.
--
Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/
"Programming is an art form that fights back"

Develop ASP.NET applications easier and in less time:
http://www.atozed.com/IntraWeb/

[Francois Beaussier]

"GeRmIc" wrote :

Hi,

I have a C DLL which i would like to import into my .NET service.
a) How do I convert the DLL so as to be refernced by a .NET service (I

don't want to use PInovke)

Hello,

Why don't you want to use PInvoke ?

--
Francois Beaussier
Fr******@3ie.org.remove