C# implementation of the 7-Zip library.
This is a C# library that allows .NET developers to use 7-Zip compression and decompression as well as the encryption that goes with it.
GitHub project page: squid-box/SevenZipSharp.
Questions tagged [sevenzipsharp]
94 questions
2
votes
2 answers
Why is compressed then uncompressed stream of different length
I'm using the SevenZipSharp library to compress and then uncompress a MemoryStream which contains a simple serialized object. However, the compressed and decompressed streams are of different length.
From the code run below I get
Input length:…
chris.au
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2
votes
2 answers
How to create a SFX ZIP with SevenZipSharp?
I have been looking at SevenZipSharp to create a self extracting zip file. The project page says that they have a special class SevenZipSfx that does this. However I have searched the object explorer and the documentation for version 0.64 and I cant…
QueueHammer
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2
votes
1 answer
The stream is invalid or no corresponding signature was found
I am trying to use SevenZipSharp to compress and decompress a memory stream. Compression is working fine but decompression is not. I think SevenZipSharp is not able to figure the archive type from the stream.
SevenZipCompressor compress = new…
AbbasFaisal
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2
votes
1 answer
How to extract a multi volume 7z file using SevenZipSharp?
I generated a multi volume 7z file using SevenZipSharp library.
The problem I have is that when I try to extract the file, I get a exception about an invalid casting:
Unable to cast object
of type 'SevenZip.InMultiStreamWrapper' to type…
ElektroStudios
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2
votes
0 answers
How to read the first part of a zipped file without decompressing the whole thing?
I have a zip file which may contain files of the type I want, but I don't know yet. When I open these files (when unzipped) in notepad, the first 8 characters are always the same. Is there a way to find out whether the first 8 characters match…
BeanFrog
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2
votes
2 answers
Decode an LZMA stream c#
I'm trying to decode an LZMA stream into a stream object so that I can read from it without hogging memory.
My input file looks like:
some uncompressed data
.
.
some lzma compressed data
.
.
And I'd like to read the uncompressed data, then make a…
maboesanman
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2
votes
2 answers
SevenZipSharp append an encrypted archive
I'm using seven zip sharp and am having issues trying to add a file to an encrypted archive.
Appending to a non-encrypted archive (with appropriate methods) seems to work, but an encrypted archive throws this following error
Invalid archive:…
Dawood Moazzem
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2
votes
0 answers
SevenZipSharp Password Check?
In the past i was suggested to use SevenZipExtractor.Check() to see if a file is password protected. This solution is giving me problems as Check() does an integrity check which means it decompresses everything. This takes far to long with the…
user34537
1
vote
2 answers
sevenzipsharp file lock. I can't move a file?
I am running sevenzipsharp on various archives and if it passes my test I'd like to move the archive into another folder. However I get an exception saying the file is in use by a process. I can't move it either in windows explorer however when i…
user34537
1
vote
2 answers
SevenZSharp Decode with password
I work with SevenZSharp from here
for Decode file I use:
CompressionEngine.Current.Decoder.DecodeIntoDirectory(@"D:\target\host_update.7z", @"D:\target");
But I don't have information how to decode .7z file with password!? Please, help me. Thanks
koder_mooder
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1
vote
2 answers
Checking whether an archive is password-protected in Sevenzipsharp (C#)
I'm writing an window form similar to 7-Zip, my problem is in the extraction part, I don't know how to check if the archive I want to extract is password protected or not.
Any idea?
carryall
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1
vote
0 answers
Decompress 7z archive in memory with SevenZipSharp
I have a 7z archive containing hundreds of text files. I want to load each text file directly into memory.
This code works, but it is slow:
var memoryStreams = new List();
var st = new SevenZipExtractor("files.7z");
for (var i = 0; i <…
JJ Lison
- 11
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1
vote
0 answers
SevenZipSharp library not working on Xamarin forms
We are working on a Xamarin project that needs to split a large file into smaller files with specified file sizes. we tried to use the SeveZipSharp library by installing the squid-box-sevenzipsharp NuGet package which supports xamarin forms for…
Anitha v
- 41
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1
vote
2 answers
Appending Streams with SevenSharpZip
I've been knocking my head on this for 2 days. We're using 7ZipSharp to create .7z files from several source files (incoming emails in fact).
In order to optimize the application, I want to avoid hard disk access so I switched to the…
CharlieBrown
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1
vote
1 answer
Set compression rootfolder in SevenZipSharp
I try to change an existing zipping tool. The zipping tool currently uses SharpZipLib. I have to convert it so that it uses SevenZipSharp. When zipping with SharpZipLib I can change the root directory of the zip and I want to keep this root…
Bongo
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