UnZipFile.cs

private string UnZipFile(string filePath)
{
    string unZippedFileName = "";
    FileInfo fileToDecompress = new FileInfo(filePath);
    try
    {
        using (FileStream originalFileStream = fileToDecompress.OpenRead())
        {
            string currentFileName = fileToDecompress.FullName;
            unZippedFileName = currentFileName.Remove(currentFileName.Length - fileToDecompress.Extension.Length);
            using (FileStream decompressedFileStream = File.Create(unZippedFileName))
            {
                using (GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress))
                {
                    decompressionStream.CopyTo(decompressedFileStream);
                }
            }
        }
        WriteToConsole("File unzipped successfully.");
    }
    catch (Exception ex)
    {
        WriteToConsole("Error: DecompressFile()" + "\n" + ex.ToString());
        unZippedFileName = "";
    }
    return unZippedFileName;
}