Using a class in a C# DLL in delphi... ( Is that even possible?)

Using a class in a C# DLL in delphi... ( Is that even possible?)

Ariesnl

Member #2,902

November 2002

I have a DLL made for C# or C++
but since noone here(at work) is fluent in C++ I have to use Delphi.

If that DLL just worked with functions, there would not be a problem.. BUT...

All functions I need are in a certain class wich I need to instantiate first...

I doubt Delphi can handle a constructor in the C++ way ...

anyone with a smart idea

Perhaps one day we will find that the human factor is more complicated than space and time (Jean luc Picard)
Current project: [Star Trek Project ] Join if you want ;-)

Niunio

Member #1,975

March 2002

If you know the "internal name" of the method may be you can use (pseudo):

PROCEDURE CsharpProcedure (Object: POINTER); CDECL;
EXTERNAL 'shared_lib_name' NAME 'CsharpMangledName'; 

PROCEDURE PascalClass.Method;
BEGIN
  CsharpProcedure (SELF.CsharpObject);
END;

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Current projects: Allegro.pas | MinGRo

BAF

Member #2,981

December 2002

You can't pull a "C# dll" in because they aren't normal DLLs, it's all intermediate .NET code, IIRC. Same with managed c++ DLLs.

BAF.zone | SantaHack!

Ariesnl

Member #2,902

November 2002

The thing also uses namespaces.. there is no such thing in Delphi as far as I know..

I'd rather use C# or C++ .. but by boss is affraid I will be the only one who understands the code :-/

Perhaps one day we will find that the human factor is more complicated than space and time (Jean luc Picard)
Current project: [Star Trek Project ] Join if you want ;-)

Tobias Dammers

Member #2,604

August 2002

If the project you're working on is a Delphi one, sticking with Delphi is the sane thing to do.
In theory, C# can be compiled into native code, but when they say "C#", people typically mean "C# .NET", which means you need the .NET CLR to run the code.
If you can get your Delphi code to produce .NET IL assemblies, then you might be able to share code between them.

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Me make music: Triofobie
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"We need Tobias and his awesome trombone, too." - Johan Halmén

Kibiz0r

Member #6,203

September 2005

There's a .NET flavor of nearly every language. I bet you could use the Delphi implementation and it would work fine. But then you need the .NET Framework to run it, unless there's a way you can compile the Delphi.NET project natively and statically...?

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BAF

Member #2,981

December 2002

If it was compiled natively, it wouldn't be .NET at that point. There is also no way around having the framework if you're interacting with other .NET assemblies.

BAF.zone | SantaHack!

Peter Hull

Member #1,136

March 2001

What you ask is possible but IMO you would add complication for little gain. If the rest of your company is using Delphi then stick to that.

Having said which, RAD Studio 2007 includes Delphi .NET (link), or there is a project called 'Delphi.NET' on Sourceforge (link)

You can call .NET assemblies from non-managed code (link. Your .NET classes get wrapped by COM objects. I think Delphi can work with COM objects, can't it?

Pete

Niunio

Member #1,975

March 2002

Peter Hull said:

I think Delphi can work with COM objects, can't it?

I used COM objects in Delphi 6 some years ago.

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Current projects: Allegro.pas | MinGRo

Tobias Dammers

Member #2,604

August 2002

I don't think the pain is going to be worth the gain.

---
Me make music: Triofobie
---
"We need Tobias and his awesome trombone, too." - Johan Halmén

Audric

Member #907

January 2001

If the class only serves as a namespace, you can write (still in C#) static functions that wrap each method you need: instanciate the object, call method, release object. It should be much easier to call such static methods from Delphi.