swdev:dotnet:calling_managed_code_from_unmanaged_code [Audina Documentation]

Calling Managed Code (.NET C#) from Unmanaged Code (Any language)

Creating a COM Library

Create COM library (managed code).

Registering a COM Library

Assembly to be deployed to GAC:

C:\>CD C:\MyLibProj\
C:\>"%WinDir%\Microsoft.NET\Framework64\v4.0.30319\regasm.exe" MyLib.dll
C:\>"%ProgramFiles(x86)%\Microsoft SDKs\Windows\v7.0A\Bin\gacinstall.exe" /i MyLib

Assembly to be deployed in application's directory (not in GAC):

C:\>CD C:\MyLibProj\
C:\>"%WinDir%\Microsoft.NET\Framework64\v4.0.30319\regasm.exe" /CodeBase MyLib.dll

To create Type Library from Assembly:

C:\>CD C:\MyLibProj\
C:\>"%WinDir%\Microsoft.NET\Framework64\v4.0.30319\regasm.exe" MyLib.dll /tlb:MyLib.tlb

Calling a Library from Unmanaged Code

Create calls (unmanaged code) to library.