It might not update until you build the project.

VC is always parsing your code in the background as you make changes. The results are stored in the project's .ncb (no-compile-browse) file. When things get out of sync, I ususally close the project, delete the .ncb, and open the project again. This causes VC to reparse all your code. If it still doesn't work after that, there's always a slim chance that something in your project is convoluted enough to confuse the parser. Also, there must not be any errors in the module that has the class you're interested in.