c# 字符串压缩

    class CompressOperation
    {
        //http://tech.e800.com.cn/articles/2009/827/1251337524145_1.html
        static void Compress(Stream source, Stream dest)
        {
            using (GZipStream zipStream = new GZipStream(dest, CompressionMode.Compress, true))
            {
                byte[] buf = new byte[1024];
                int len;
                while ((len = source.Read(buf, 0, buf.Length)) > 0)
                    zipStream.Write(buf, 0, len);
            }
        }

        public static void CompressString2File(string strSource, string fileName)
        {
            using (MemoryStream source = new MemoryStream(Encoding.UTF8.GetBytes(strSource)))
            using (FileStream fsWrite = new FileStream(fileName, FileMode.Create))
                Compress(source, fsWrite);
        }

        static void Decompress(Stream source, Stream dest)
        {
            using (GZipStream zipStream = new GZipStream(source, CompressionMode.Decompress, true))
            {
                byte[] buf = new byte[1024];
                int len;
                while ((len = zipStream.Read(buf, 0, buf.Length)) > 0)
                    dest.Write(buf, 0, len);
            }
        }

        public static string DecompressFile2String(string fileName)
        {
            using (FileStream fs = new FileStream(fileName, FileMode.Open))
            using (MemoryStream ms = new MemoryStream())
            {
                Decompress(fs, ms);
                return Encoding.UTF8.GetString(ms.ToArray());
            }
        }
    }