C# wrapper interface error: E_NOINTERFACE

Question

I am trying to produce a C# wrapper for a COM object that I have (named SC_COM.dll), but am having some issues linking it with Visual Studio 2008 (running Vista). I need to

Answer 1

Which version of Windows? Since Windows Vista, an internal manifest overrides an external manifest. By default, C# executables have internal manifests, which means that your whatever.exe.manifest file will be ignored.

If you go to the properties page for your C# EXE, you'll see there's an "Icon and manifest" section on the "Application tab". Set "Manifest" to the name of your manifest file, and it'll be embedded instead of the default one.

If that doesn't work, you might have to do some post-build steps with MT.EXE in order to merge your external manifest with the default internal one and to put the merged manifest back into the .EXE file.