> The easiest place to start is http://www.winzip.com/other.htm. There a
free
> download add-on that provides command-line access to zip/unzip. From C#,
> you can use the System.Diagnostics.Process to execute the command; check
the
> help files for command-line syntax.

> The more encapsulated solution is to incorporate a Zip library such as
> NZipLib at http://www.icsharpcode.net/OpenSource/NZipLib/default.asp

> Hi,

> Let me first apologise for the cross post but this is relevant to all the
> groups I have posted to.

> I have seen many posts looking for compression libraries so I though this
> might help.

> Our company is about to release a native .NET component (written entirely
in
> managed C++) that will give you zip/unzip capability using either streams
or
> disk based files.

> It will also encrypt / decrypt the streams.

> Included are formatters (ZipBinaryFormatter and ZipSoapFormatter) which
will
> give compressed and secure Binary or SOAP comms.

> The finished version will have the ability to create self extracting
> archives but this has been left out for now.

> If anyone wants a copy it can be downloaded at
> www.amalgam-net.com/downloads/ziplib.zip

> Use the news.amalgam-net.com/ziplib newsserver to post bugs / ask
questions
> etc.

> The help file is being finalised and is not included with the download --
> just use the newsgroup for support.

> Please remember that this is compiled for RC and is still a beta. The
retail
> version will be available just as soon as the .NET RTM release is
available.

> Let me thank everyone for their tolerance in this post.

> Thanks

> Andy Haynes

> I'm trying to find a library/component/reference object for zipping or
> unzipping files from within Visual Basic.  Has anyone done this, know where
> any code samples are or other related information?  Much thanks!

> ABH