decompress a .gz file using GZipStream
c#, filestream, gzipstream
Solution
You need to decompress but you set `CompressionMode.Compress`, replace it with `CompressionMode.Decompress`.
Example here.
Problem
I have several .gz files, and I want to decompress them one by one. I have writen a simple code using GzipStream in C#, but got failed. I wonder a correct and useful method to achieve what I want. Thanks a lot. ``` private string Extrgz(string infile) { string dir = Path.GetDirectoryName(infile); string decompressionFileName = dir + Path.GetFileNameWithoutExtension(infile) + "_decompression.bin"; using (GZipStream instream = new GZipStream(File.OpenRead(infile), CompressionMode.Compress))// ArgumentException... { using (FileStream outputStream = new FileStream(decompressionFileName, FileMode.Append, FileAccess.Write)) { int bufferSize = 8192, bytesRead = 0; byte[] buffer = new byte[bufferSize]; while ((bytesRead = instream.Read(buffer, 0, bufferSize)) > 0) { outputStream.Write(buffer, 0, bytesRead); } } } return decompressionFileName; } ```