基于.NET 4.5 压缩的使用

在.NET 4.5中新加入的压缩的命名空间和方法。可以抛弃ICSharpCode.SharpZipLib.dll 这个类库了。性能上不相上下。但是能够大大简化你的代码。如果开始使用.NET FrameWork4.5 做压缩不妨试试自带的压缩方法.

传统使用ICSharpCode.SharpZipLib.dll 所写的代码。

        static void Compress(string[] filePaths, string zipFilePath)
        {
            byte[] _buffer = new byte[4096];
            if (!Directory.Exists(zipFilePath))
                Directory.CreateDirectory(Path.GetDirectoryName(zipFilePath));
            using (ZipOutputStream zip = new ZipOutputStream(File.Create(zipFilePath)))
            {
                foreach (var item in filePaths)
                {
                    if (!File.Exists(item))
                    {
                        Console.WriteLine("the file {0} not exist!", item);
                    }
                    else
                    {
                        ZipEntry entry = new ZipEntry(Path.GetFileName(item));
                        entry.DateTime = DateTime.Now;
                        zip.PutNextEntry(entry);
                        using (FileStream fs = File.OpenRead(item))
                        {
                            int sourceBytes;
                            do
                            {
                                sourceBytes = fs.Read(_buffer, 0, _buffer.Length);
                                zip.Write(_buffer, 0, sourceBytes);
                            } while (sourceBytes > 0);
                        }
                    }
                }
                zip.Finish();
                zip.Close();
            }
        }
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使用.NET FrameWork 4.5中自带的压缩。
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