ZipArchive For Windows 8 Apps

工作需求，整理：

    /// <summary>
    /// Compression & decompression for a single file.
    /// </summary>
    public static class ZipHelper
    {
        /// <summary>
        /// Compress a single file to a zipFile.
        /// </summary>
        /// <param name="srcFileName">the name of the specified source file</param>
        /// <param name="srcFilePath">the path of the specified source file</param>
        /// <param name="zipFilePath">the path of the specified zip file</param>
        public static void Compressing(string srcFileName,string srcFilePath, string zipFilePath)
        {
            var zipStream = FileHelper.OpenFile(zipFilePath).Result.OpenStreamForWriteAsync().Result;
            var srcFile = FileHelper.OpenFile(srcFilePath).Result;
            var streams = srcFile.OpenStreamForReadAsync().Result;
            var buffers =new byte[streams.Length];
            streams.Read(buffers, 0, buffers.Length);
            using (zipStream)
            {
                using (var zipArchive = new ZipArchive(zipStream, ZipArchiveMode.Create))
                {
                    var entry = zipArchive.CreateEntry(srcFileName);
                    using (var stream=entry.Open())
                    {
                        var bytes = buffers;
                        stream.Write(bytes,0,bytes.Length);
                    }
                } 
            }
        }


        /// <summary>
        /// 解压单个文件
        /// </summary>
        /// <param name="zipFilePath">压缩文件路径</param>
        /// <param name="desFilePath">存放文件路径</param>
        public  static  void Decompressing(string zipFilePath,string desFilePath)
        {
            var zipStream = FileHelper.OpenFileStream(zipFilePath, FileAccessMode.ReadWrite).Result.AsStream();
            var desFileStream = FileHelper.OpenFileStream(desFilePath, FileAccessMode.ReadWrite).Result.AsStream();
            using (var zipArchive=new ZipArchive(zipStream,ZipArchiveMode.Read))
            {
                ZipArchiveEntry entry = zipArchive.Entries[0];
                using (var stream=entry.Open())
                {
                    while (stream.ReadByte()!=-1)
                    {
                        desFileStream.WriteByte((byte)stream.ReadByte());
                    }
                }
            }
            desFileStream.Dispose();
        }
    }

方法内部适当调整，可用于Windows Phone.