In VS 2005 and Excel 2003. I am writing an Automation Add-In in C# and don't
want to expose the Object methods (GetHashCode, GetType etc.) to end users to
put in their cell formulas. A post here
http://groups.google.com/group/micro...6a59ead000e62?

suggests marking the class as ClassInterfaceType.None and implementing a
public interface with just the desired methods but this does not work (maybe
it worked in .NET 1.1). Help?