Call managed code from unmanaged code

[Holger Kasten]

How to call managed code from unmanaged code?

 

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

Holger,

There are two ways. The first is to export your objects as COM
components.

The second is to use C++ and use the /clr switch, which will allow you
to access managed assemblies.

Hope this helps.

 

[Sahil Malik [MVP]]

Just use it as a COM component - RegAsm.

- Sahil Malik [MVP]
ADO.NET 2.0 book -
http://codebetter.com/blogs/sahil.malik/archive/2005/05/13/63199.aspx

 

[Willy Denoyette [MVP]]

How to call managed code from unmanaged code?

It depends, first what do you call unmanaged code, more exactly what's the
language of implementation?
If it's native C++ you have two options:
- write a mixed code wrapper using Managed C++ (or the upcoming C++/CLI),
or.
- expose your C# classes as COM objects (check MSDN for details on COM
interop), and change your C code such that you can call into COM.
If it's VB6 or Delphi or another language that supports COM natively, your
bets bet is to expsose your C# classes as COM interfaces.
Note however that COM interop puts some constraints on the classes and types
passed to/from unmanaged code.

Willy.

 

[Holger Kasten]

Thx for your reply!



So this would allow me to create a C++ dll which could be a general
wapper for calls to my .net asemblies?

And I could use that dll from all regular W32 apps?