Simple C# 7-zip library? | Tech Off

alwaysmc2
It's not stupid; It's advanced.

I've looked all over and haven't found an easy-to-use C# library that allows the decompression of 7-zip archives. I want to be able to enumerate the contents of a 7-zip archive and extract single files from it. I don't even care about the library's code, and would actually prefer a DLL.

Anyone know if what I am describing exists?

littleguru
allein, allein,... allein, allein!

Isn't 7-zip open source? You could look into how they did it and try to rebuild (only for personal usage of course).

alwaysmc2
It's not stupid; It's advanced.

In reply to littleguru

#Aug 2nd @ 7:51 PM

Sadly, "open source" doesn't imply "easy to reuse". :-/

Found this in the FAQ earlier:

How can I add support for 7z archives to my application?

One way is to use the 7za.dll (available from sf.net for download). The 7za.dll works via COM interfaces. It, however, doesn't use standard COM interfaces for creating objects. You can find a small example in the source code. A full example is 7-Zip itself, since 7-Zip works via this dll also. There are other applications that use 7za.dll such as WinRAR, PowerArchiver and others.

The other way is to call the command line version: 7za.exe.

littleguru
allein, allein,... allein, allein!

In reply to alwaysmc2

#Aug 2nd @ 8:17 PM

Have you tried the SDK that you can download from the 7zip website. It has also samples for C#.

alwaysmc2
It's not stupid; It's advanced.

In reply to littleguru

#Aug 3rd @ 11:57 AM

I have. The purpose of the SDK is to compress/decompress data using the LZMA, however it does not include the extra bit of code to apply that algorythm to 7-zip files. Sad

I also found this C# interface for the the 7-zip dll, but haven't had success with it.

Maddus Mattus
it really does!

In reply to alwaysmc2

#Aug 3rd @ 12:37 PM

http://sharpdevelop.net/OpenSource/SharpZipLib/

littleguru
allein, allein,... allein, allein!

In reply to Maddus Mattus

#Aug 4th @ 1:53 AM

That's not 7zip... so i guess it's not what alwaysmc2 wants.

alwaysmc2
It's not stupid; It's advanced.

In reply to littleguru

#Aug 4th @ 5:35 PM

I tried it anyway, and it is exactly what I want, except that it doesn't support 7-zip. The way the library manages adding and extracting files is very simple, but still flexible.

littleguru
allein, allein,... allein, allein!

In reply to alwaysmc2

#Aug 4th @ 7:18 PM

You were just in a search for a ZIP library? That comes already with .NET 3.5 build-in btw. I thought you wanted something that is 7-zip specific.

Maddus Mattus
it really does!

In reply to littleguru

#Aug 4th @ 10:15 PM

I like the ziplib better then the built in zip capabilities. But that's just me.

And yes I knew it didnt support 7-Zip, but I was in a bit of a hurry so I thought I would just dump the link and let him decide for himself if it was usefull or not Smiley

alwaysmc2
It's not stupid; It's advanced.

In reply to Maddus Mattus

#Aug 5th @ 12:06 AM

Yeah, I do want 7-zip support, but it seems that SharpZipLib is a great example of how a compression library should be implimented.