Unzipping a .gz file using C#

Question

I have a tarred gunzip file called ZippedXmls.tar.gz which has 2 xmls inside it. I need to programmatically unzip this file and the output should be 2 xmls copied in a folde

Answer 1

I've used .Net's built-in GZipStream for gzipping byte streams and it works just fine. I suspect that your files are tarred first, before being gzipped.

You've asked for code, so here's a sample, assuming you have a single file that is zipped:

FileStream stream = new FileStream("output.xml", FileMode.Create); // this is the output
GZipStream uncompressed = new GZipStream(stream, CompressionMode.Decompress);

uncompressed.Write(bytes,0,bytes.Length); // write all compressed bytes
uncompressed.Flush();
uncompressed.Close();

stream.Dispose();

Edit:

You've changed your question so that the file is a tar.gz file - technically my answer is not applicable to your situation, but I'll leave it here for folks who want to handle .gz files.

Answer 2

sharpziplib should be able to do this

Answer 3

I know this question is ancient, but search engines redirect here for how to extract gzip in C#, so I thought I'd provide a slightly more recent example:

using (var inputFileStream = new FileStream("c:\\myfile.xml.gz", FileMode.Open))
using (var gzipStream = new GZipStream(inputFileStream, CompressionMode.Decompress))
using (var outputFileStream = new FileStream("c:\\myfile.xml", FileMode.Create))
{
    await gzipStream.CopyToAsync(outputFileStream);
}

For what should be the simpler question of how to untar see: Decompress tar files using C#