public void Zlib_DisposedException_DeflateStream() { string TextToCompress = LetMeDoItNow; MemoryStream ms1= new MemoryStream(); Stream compressor= new DeflateStream(ms1, CompressionMode.Compress, false); TestContext.WriteLine("Text to compress is {0} bytes: '{1}'", TextToCompress.Length, TextToCompress); TestContext.WriteLine("using compressor: {0}", compressor.GetType().FullName); StreamWriter sw = new StreamWriter(compressor, System.Text.Encoding.ASCII); sw.Write(TextToCompress); sw.Close(); // implicitly closes compressor sw.Close(); // implicitly closes compressor, again compressor.Close(); // explicitly closes compressor var a = ms1.ToArray(); TestContext.WriteLine("Compressed stream is {0} bytes long", a.Length); var ms2 = new MemoryStream(a); Stream decompressor = new DeflateStream(ms2, CompressionMode.Decompress, false); TestContext.WriteLine("using decompressor: {0}", decompressor.GetType().FullName); var sr = new StreamReader(decompressor, System.Text.Encoding.ASCII); string DecompressedText = sr.ReadToEnd(); sr.Close(); TestContext.WriteLine("decompressor.CanRead = {0}",decompressor.CanRead); TestContext.WriteLine("Read {0} characters: '{1}'", DecompressedText.Length, DecompressedText); TestContext.WriteLine("\n"); Assert.AreEqual<String>(TextToCompress, DecompressedText); }