net实现压缩功能

public static class ComPRessor    {                    public static byte[] Compress(byte[] data)            {                using (MemoryStream output = new MemoryStream())                {                    using (GZipStream gzip = new GZipStream(output, CompressionMode.Compress, true))                    {                        gzip.Write(data, 0, data.Length);                        gzip.Close();                        return output.ToArray();                    }                }            }            public static byte[] Decompress(byte[] data)            {                using (MemoryStream input = new MemoryStream())                {                    input.Write(data, 0, data.Length);                    input.Position = 0;                    using (GZipStream gzip = new GZipStream(input, CompressionMode.Decompress, true))                    {                        using (MemoryStream output = new MemoryStream())                        {                            byte[] buff = new byte[64];                            int read = -1;                            read = gzip.Read(buff, 0, buff.Length);                            while (read > 0)                            {                                output.Write(buff, 0, read);                                read = gzip.Read(buff, 0, buff.Length);                            }                            gzip.Close();                            return output.ToArray();                        }                    }                }            }