How can I used ReadAllLines with gzipped file

Question

Is there a way to use the one-liner ReadAllLines on a gzipped file?

var pnDates = File.ReadAllLines("C:\myfile.gz");

Can I put GZipStream wrapper around the file some how?

Answer 1

No, File.ReadAllLines() treats the file specified as text file. A zipfile isn't that. It's trivial to do it yourself:

public IEnumerable<string> ReadAllZippedLines(string filename)
{
    using (var fileStream = File.OpenRead(filename))
    {
        using (var gzipStream = new GZipStream(fileStream, CompressionMode.Decompress))
        {
            using (var reader = new StreamReader(gzipStream)) 
            {
                yield return reader.ReadLine();
            }
        }
    }
}