decompress file using C#

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Import namespaces

using System.IO;
using System.IO.Compression;

Code

FileStream source = File.OpenRead(@"C:\text.txt.gz");
FileStream destination = File.Create(@"C:\text2.txt");
GZipStream compressionStream = new GZipStream(source, CompressionMode.Decompress);

int readByte = compressionStream.ReadByte();
while (readByte != -1)
{
    destination.WriteByte((byte)readByte);
    readByte = compressionStream.ReadByte();
}

source.Close();
compressionStream.Close();
destination.Close();

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