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SharpZipLib 0.5

Released:	2004-03-10
License:	Freeware
Publisher:	ComponentSpot
Language:	English
Platform:	Windows
Requirements:	.NET
Install:	Install and Uninstall
Downloads:	1342
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Publisher's Description:

SharpZipLib - #ziplib (pronounced SharpZipLib) is a free, open-source compression library for the .NET Framework. Data can be handled using the following formats:

· Zip: This format archives multiple files into one file and compresses the results. Uses the deflate algorithm.
· Gzip: This format is often used in Unix and GNU Linux. It does not archive multiple files, so it is frequently used in conjunction with the ‘tar’ command. Also uses the deflate algorithm.
· Tar (“Tape archive”): Archives a set of files and directories into one file. It does not compress the files. Often used in conjunction with gzip to compress.
· Bzip2: This uses the same file format as gzip, but a different compression algorithm, called BWT. Produces better compression than gzip, but is much slower.

SharpZipLib also computes checksums. Ported to .NET from the GNU Classpath ZIP library for Java, the developer, ic#code, wrote the library entirely in C#. Because it is a strong-named assembly, it can be shared with other applications or used in other projects when registered in the Global Assembly Cache (GAC).

The library currently lacks Zip file splitting/spanning, can’t create custom self-extracting Zip files, and can’t read or write files to memory.

The project for the library included in the download is intended to be opened in ic#code’s own IDE, #develop (SharpDevelop), which, although a work in progress, gives programmers a free Windows Forms designer similar to VS.NET, for C# and VB.NET. The library and its source code are distributed under the GNU General Public License, with an exception.

Latest Changes:

- Support for crypted files (decryption) - WinZip can't delete bug fixed (thanx to JackmanG from the SharpDevelop forum) - The ZipFile class has now a 'ZipFileComment' property containing the comment for the whole zip file. Contributed by John Carto.

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Latest User Reviews:

Version: 0.5

Good experience with SharpZipLib

Recently, I needed to develop software for automatically reading data from files in rpd format. This is a special format for storing weather radar data. The rpd file consists of a 512 Byte header, followed by a matrix of numbers (the actual data grid). This matrix is compressed by gzip and attached to the header. I needed to extract data from a single location (specified by row and column in the matrix) for a time series of 1000 rpd files. This was an easy task with SharpZipLib using methods of the GZipInputStream class.
The SharpZipLib library enables me to extract data from .rpd files without having to create unzipped files on the disk, which saved disk space and increased the performance of my application.

Version: 0.5

Great library for me

This is what I am looking for, simple and powerfull component for file packing. Thanks for it very much.

Version: 0.5

A middle class utility...

Two things make SharpZibLib a representational member of the middle class of programming utilities.
The first is a 'high class' approach which limelights the fact that this is a free , for every use , utility that combines more sophisticated programming issues such as data compression and encryption , with the simplicity , from the user's scope , of its interface. And a simple 'zip unzip encryption .net' query in google search bar will make clear how precious is the 'free for every use' feature.
Of course the second thing is a counterpart of the first , and this makes SharpZipLib a proletarian member of the efficient programs society. Maybe this is excused from the fact that it is implemented in the enviromment of MS VS , which is famous for the simple mediocre easement that provides to its users rather than the speed and efficiency of the infastracture and the algorithms used . But devil's attorney could say : 'Maybe this is only an excuse to the lack of programming know-how and mathematical knowledge that are required for the creation of such software.
Anyway , I would recommend SharpZipLib to programmers that need middle level compression and encryption capabilities for their fabrications ,and this is not bad at all for a huge number of tasks , rather than those who go afer giving quality and programmatical wisdom in their projects .

Ste.

Version: 0.5

Good but not enough for me :)

Itis nice but unfortunately I cannot use it for creating and reading password protected ZIP files in Dot.Net 2.0 platform.
The password protected files created by this utility can be opened without suppling a password by any Zip opening software.
Please let me know the solution if you have.

Version: 0.5

SharpZipLib review

Product looks good based on my initial review

Version: 0.5

Performance problem

I want to say that the software was fairly easy to install and to use in a program.

But, when I ran my program it took over three and a half hours to build a ZIP file.

I downloaded a different component, modified the program to use that control and that version of the program created the exact same output in less than ten minutes.

So I can't recommend this control.

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