Zip / Unzip folders and files with C#

[By Peter Bromberg]
The .NET Framework has GzipStream and DeflateStream classes for compression tasks, but they do not support the standard ZIP file / folder FileEntry mechanism to zip a folder with all its files and subfolders.

Fortunately, the ICSharpCode SharpZipLib project does support this, as well as passwords for zip files and compression level.

Here is a utility class I wrote that handles zipping or unzipping a folder with all its subfolders and contained files, using SharpZipLib:
You can click Here to  download the SharpZipLib! 

  1using System;
  2using System.Collections;
  3using System.IO;
  4using ICSharpCode.SharpZipLib.Zip;
  5
  6namespace FolderZipper
  7}