c# - Why the length of zipped stream is always 10? -

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i testing code. stuck following. ever write text, length of zipped stream 10? doing wrong?

var instream = new memorystream();  var inwriter = new streamwriter(instream);  str text = "helloworldsasdfghj123455667880fgsjfhdfasdferrbvbyjun hbwecwcxqsz    edcrgvebrjnuj5juerqwetsrgfggshurhtnbvzkfjhguhgrgal;kjhao;rhl;zkfhg;aorihghg;oahrgarhguhh';aaeaeiaijeihjrhfidfhfidfidhh953453453"; inwriter.writeline(text);  inwriter.flush(); instream.position = 0;  var outstream = new memorystream(); var compressstream = new gzipstream(outstream, compressionmode.compress); instream.copyto(compressstream);  compressstream.flush(); outstream.flush(); compressstream.flush();  outstream.position = 0;  console.writeline(outstream.position); console.writeline(outstream.length);

until close compression stream doesn't know you've finished writing - cannot complete compression algorithm. flushing flushes parts can flush, until been told have completed adding new bytes cannot flush last package of compressed data.


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