问题
I have a program (written in C#) that reads/writes its data directly (direct file access without server) to firebird database files. For a better exchange I want to (un)compress them on import/export for a better exchange over the internet without the need of an external program to (un)compress them.
I know #ziplib which supports Zip, GZip, Tar and BZip2.
What else free compression libraries for C# do you know? Is there a .NET library which supports LZMA so i can read/write ".7z" files?
回答1:
There is a good article written by Peter Bromberg:
7Zip (LZMA) In-Memory Compression with C#
Shows a simple C#
SevenZip.Compression.Lzma.SevenZipHelperclass to enable high-compression of in-memory objects with C#. Adds a new 7Zip format LZMA Cookie Compression class to the previously published CookieCompression utility.
回答2:
7-zip has a free source code, public domain C# SDK for the LZMA algorithm:
http://www.7-zip.org/sdk.html
回答3:
You may try SevenZipSharp
回答4:
It seems to be quite a little known fact but .NET library includes packaging/compression API
回答5:
If you are writing individual files, then you could just treat it as a stream and use the inbuilt GZipStream / DeflateStream (although in some tests I did, #ZipLib out-performed the MS offering for both ratio and speed). Or there is inbuilt zip support somewhere in the framework. I don't know about LZMA, though.
来源：https://stackoverflow.com/questions/449998/free-compression-library-for-c-sharp-which-supports-7zip-lzma