Add VC++ DLL to ASP .NET web application?

[fongjeffrey]

Hi there,
I have several DLLS which were written in VC++, and I have started a new ASP .net project which needs to reference to those DLLs. However, when I tried to add those DLLs reference to my project, I am getting the following error "This DLL is not a valid assembly or COM components. Only assemblies w/ extension "dll" or COM components can be added to project.
Does anyone know how I can resolve this problem.
Thank you very much for ur help and I am appreciated!

Jeffrey

[itomatik]

Hi,

you should use technique called P/Invoke. You can not add the DLL because it's based on unmanaged code and you're C# code is managed.
Google "PInvoke".

good luck.