This is a WinForms Zip Archive Tool you can use to create zip files or extract zip files. The code is an updated version of the popular DotNetZip Tool converted to Visual Studio 2010 SP1 with .NET Framework 4.0. This version fixes bugs from earlier versions.
The project makes use of BackgroundWorker threads and reports progress in a progress bar for files being compressed or unpacked from an archive.
The full source code is included, it has been tested and is working, you are welcome to use it in your projects.