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copied!<p>You can plug a stream in between which counts, how many bytes GZipStream has read.</p> <pre><code> public class ProgressStream : Stream { public long BytesRead { get; set; } Stream _baseStream; public ProgressStream(Stream s) { _baseStream = s; } public override bool CanRead { get { return _baseStream.CanRead; } } public override bool CanSeek { get { return false; } } public override bool CanWrite { get { return false; } } public override void Flush() { _baseStream.Flush(); } public override long Length { get { throw new NotImplementedException(); } } public override long Position { get { throw new NotImplementedException(); } set { throw new NotImplementedException(); } } public override int Read(byte[] buffer, int offset, int count) { int rc = _baseStream.Read(buffer, offset, count); BytesRead += rc; return rc; } public override long Seek(long offset, SeekOrigin origin) { throw new NotImplementedException(); } public override void SetLength(long value) { throw new NotImplementedException(); } public override void Write(byte[] buffer, int offset, int count) { throw new NotImplementedException(); } } // usage FtpWebResponse response = ftpclientRequest.GetResponse() as FtpWebResponse; using (Stream ftpStream = response.GetResponseStream()) using (ProgressStream progressStream = new ProgressStream(ftpstream)) using (GZipStream unzipped = new GZipStream(progressStream, CompressionMode.Decompress)) using (StreamReader linereader = new StreamReader(unzipped)) { String l; while ((l = linereader.ReadLine()) != null) { progressStream.BytesRead(); // does contain the # of bytes read from FTP so far. } } </code></pre>

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