Catalog.CodeProject.com

A high-speed, reliable Zip library with affordable price which lets you add zip/unzip functionality to your .NET applications with only few lines of code.
 
Features
 
* Creating and modifying ZIP files easily
* .NET Technology
* Supports many .NET Platforms
* Supports event-driven (Asynchronous) and blocking (Synchronous) Design
* Flexibility
* Fully Documented
* Complete Zip & unzip samples in VB.NET, C#, and ASP.NET
* Royalty-free
 
Creating and modifying ZIP files easily
 
The ZIP component offers a comprehensive set of classes for compressing and decompressing archive files, providing the developer with everything that he needs to incorporate zip and unzip functionality in an application as listed below:
 
* WinZip, PKZIP, and UNIX gZip compatible
* Classic Pkzip encryption or AES encryption
* 128-bit, 192-bit, and 256-bit AES encryption standard
* Supports for the Zip64 zip file format
* Supports BZip2 compression algorithm
* Nine (9) compression levels, individual compression level can be set for each file
* Create new zip files or update existing zip files in stream (can be on disk or in memory stream, buffer)
* Extract zip files to disk, memory stream or memory buffer
* Supports Wildcard for batch operations
* Add, move, remove, rename and change attributes of files and folders in a zip file, on disk or in memory
* Update files in a zip file, on disk or in memory