Zip / Unzip folders and files with C#

Here is a utility class I wrote that handles zipping or unzipping a folder with all its subfolders and contained files, using SharpZipLib:

http://www.eggheadcafe.com/tutorials/aspnet/9ce6c242-c14c-4969-9251-af95e4cf320f/zip--unzip-folders-and-f.aspx