Gzipstream 解压问题

Gzipstream  解压问题 

static void Main(string[] args)
        {

            string path = @"C:\fg.txt"; //压缩前
            string pathdes=@"C:\fg1.txt"; //压缩后
            string depath = @"C:\fg2.txt"; //还原为

            GzipFile(path, pathdes);           


            DeGzipFile(pathdes,depath );
            Console.Read();
        }



        /// <summary>
        /// 压缩文件
        /// </summary>
        /// <param name="soursPath"></param>
        /// <param name="desPath"></param>
        static void GzipFile(string soursPath, string desPath)
        {
            //File.ReadAllText(Path,Encoding.Default)
            byte[] compressed = Compress(File.ReadAllBytes(soursPath));
            File.WriteAllBytes(desPath, compressed);

        }

        /// <summary>
        /// 解压文件
        /// </summary>
        /// <param name="soursPath"></param>
        /// <param name="desPath"></param>
        static void DeGzipFile(string soursPath, string desPath)
        {
            byte[] compressed = Decompress(File.ReadAllBytes(soursPath));
            File.WriteAllBytes(desPath, compressed);

        }

        /// <summary>
        /// 压缩流
        /// </summary>
        /// <param name="data">byte[] 输入流</param>
        /// <returns>输出流byte[]</returns>
        public static byte[] Compress(byte[] data)
        {
            byte[] result;
            Console.WriteLine("初始大小:\t{0} bytes", data.Length);
            using (MemoryStream baseStream = new MemoryStream())
            {
                using (GZipStream stream = new GZipStream(baseStream, CompressionMode.Compress, true))
                {
                    stream.Write(data, 0, data.Length);
                }
                result = baseStream.ToArray();  // only safe to read after deflate closed
            }
            Console.WriteLine("压缩后大小:\t{0} bytes", result.Length);
            return result;
        }



        /// <summary>
        /// 将流解压缩
        /// </summary>
        /// <param name="data">byte[] 输入流</param>
        /// <returns>输出流byte[]</returns>
        public static byte[] Decompress(byte[] data)
        {            
            byte[] result;
            Console.WriteLine("解压前大小:\t{0} bytes", data.Length);
            using (MemoryStream mStream = new MemoryStream(data))
            {
                using (GZipStream gStream = new GZipStream(mStream, CompressionMode.Decompress))
                {
                    StreamReader streamR = new StreamReader(gStream, Encoding.Default);//此处Encoding 选择默认
                    string outs = streamR.ReadToEnd();//也可以直接返回字符串
                    result = Encoding.Default.GetBytes(outs);
                }
            }
            Console.WriteLine("解压后大小:\t{0} bytes", result.Length);
            return result;
        }