What is wrong with this code below. I always get FALSE, meaning after compression, decompressed data does not match original value.
public static bool Test()
{
string sample = "This is a compression test of microsoft .net gzip compression method and decompression methods";
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
byte[] data = encoding.GetBytes(sample);
bool result = false;
//Compress
MemoryStream cmpStream;
cmpStream = new MemoryStream();
GZipStream hgs = new GZipStream(cmpStream, CompressionMode.Compress);
hgs.Write(data, 0, data.Length);
byte[] cmpData = cmpStream.ToArray();
MemoryStream decomStream;
decomStream = new MemoryStream(cmpData);
hgs = new GZipStream(decomStream, CompressionMode.Decompress);
hgs.Read(data, 0, data.Length);
string sampleOut = System.BitConverter.ToString(data);
result = String.Equals(sample, sampleOut) ;
return result;
}
I will really appreciate if you can point out where I am making a mistake.
Close the GZipStream
after the Write
call.
Without calling Close
, there's a possibility that some data is buffered and is not written to the underlying stream yet.