How to use .dll created with C++ in C#?

[CAIBird]

Hi,

I have a dll created earlier by VC++ which export a class. And now i want to
use this class in C# code, how can i do it?

And what if it is a static library(.lib)?

Thanks in advance

Joe Cai

[Lucian Wischik]

CAIBird <CA*****@discussions.microsoft.comwrote:

>I have a dll created earlier by VC++ which export a class. And now i want to
use this class in C# code, how can i do it?
And what if it is a static library(.lib)?

By far the easiest is to open up your DLL project again, turn on "CLI"
in Projects>Settings>General, and turn your class into a "ref class"
rather than just a "class", and rebuild. This way it will produce a
normal .net assembly with classes that can be used by any other .net
language.

--
Lucian

[CAIBird]

THX.
But I have no source code :)

"Lucian Wischik" wrote:

CAIBird <CA*****@discussions.microsoft.comwrote:

I have a dll created earlier by VC++ which export a class. And now i want to
use this class in C# code, how can i do it?
And what if it is a static library(.lib)?

By far the easiest is to open up your DLL project again, turn on "CLI"
in Projects>Settings>General, and turn your class into a "ref class"
rather than just a "class", and rebuild. This way it will produce a
normal .net assembly with classes that can be used by any other .net
language.

--
Lucian

[Willy Denoyette [MVP]]

"CAIBird" <CA*****@discussions.microsoft.comwrote in message
news:AC**********************************@microsof t.com...

Hi,

I have a dll created earlier by VC++ which export a class. And now i want to
use this class in C# code, how can i do it?

You can't, you can only call exported functions with "C" linkage. What you can do is write a
managed wrapper class using C++/CLI (VS2005). Search MSDN for "C++ Interop" for details.

And what if it is a static library(.lib)?

You can't use a .lib from C#.

Thanks in advance

Joe Cai