C programming interface for .NET based Library

[Ratan]

Hi All,
We have a .NET library having .NET remoting based programming interface
developed using VC++.NET (VS 2005 Beta2).

We want to provide C interface for a legacy application. Is it possible?
If yes, what would be the best approach?

Regards,
RS

[William DePalo [MVP VC++]]

"Ratan" <Ra***@discussions.microsoft.com> wrote in message
news:54**********************************@microsof t.com...

We have a .NET library having .NET remoting based programming interface
developed using VC++.NET (VS 2005 Beta2).

We want to provide C interface for a legacy application. Is it possible?
If yes, what would be the best approach?

You can use the assembly registration (regasm) utility

http://msdn.microsoft.com/library/de...lregasmexe.asp

to "create" a COM object and type library from your .Net classes. Your C
application makes use of your .Net classes just as it would any other COM
object. I sketched the procedure with a toy .Net class and a C++ caller
here:

http://groups.google.com/group/micro...7cc21dc2b67f3d

If C++ rather than C is an option you can create an unmanaged C++ class (or
classes) which has one public method for every method of every class in your
..Net solution. Then the C++ application can use the "it just works" method
of interop

http://msdn.microsoft.com/library/de...nunmancode.asp

so that every call to one of these unmanaged methods is implemented by
calling on the corresponding managed method.

Regards.
Will

[Jochen Kalmbach [MVP]]

Hi Ratan!

We have a .NET library having .NET remoting based programming interface
developed using VC++.NET (VS 2005 Beta2).

We want to provide C interface for a legacy application. Is it possible?
If yes, what would be the best approach?

There are several ways to do this:
- COM-Interop (regasam as William said already)
- CLR-Hosting
- Managed C++ (if you write a DLL this might be possible; never tested
it...)

For more infos see:
http://www.gotdotnet.com/team/clr/wh...r_hosting.aspx
--
Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/

[Ratan]

Hi,

Thank you very much to *both of you* for your suggestion.
I will proceed according to your suggestions.

Regards,
RS

"Jochen Kalmbach [MVP]" wrote:

Hi Ratan!

We have a .NET library having .NET remoting based programming interface
developed using VC++.NET (VS 2005 Beta2).

We want to provide C interface for a legacy application. Is it possible?
If yes, what would be the best approach?

There are several ways to do this:
- COM-Interop (regasam as William said already)
- CLR-Hosting
- Managed C++ (if you write a DLL this might be possible; never tested
it...)

For more infos see:
http://www.gotdotnet.com/team/clr/wh...r_hosting.aspx
--
Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/