Are Windows Explorer Shell Extensions viable (Column Extensions in particular)?
I don't think column extensions have been viable since XP.
All the article/docs I search seem to be 5-10 years old, and it appears .NET shell extensions are not recommended by Microsoft.
Different camps at MS have said different things, especially when .Net
4 came out, but I think the consensus is that it's not recommended to
do shell extensions in .NET - however, people still do them! :(
Dave