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 Main(string[] args)
 {
 Stopwatch watch = new Stopwatch();
 watch.Start();
 string path = @"E:\"; 
 Compress(Directory.GetFiles(path), @"F:\4.0.zip");
 watch.Stop();
 Console.WriteLine("消耗时间:{0}", watch.ElapsedMilliseconds);
 FileInfo f = new FileInfo(@"F:\4.0.zip");
 Console.WriteLine("文件大小{0}", f.Length);
 }

 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();
 }
 }

static void Main(string[] args)
 {
 Stopwatch watch = new Stopwatch();
 watch.Start();
 string path = @"E:\";
 Compress(path, @"F:\4.5.zip");
 watch.Stop();
 Console.WriteLine("消耗时间:{0}", watch.ElapsedMilliseconds);
 FileInfo f = new FileInfo(@"F:\4.5.zip");
 Console.WriteLine("文件大小{0}", f.Length);
 }
 static void Compress(string filePath, string zipFilePath)
 {
 ZipFile.CreateFromDirectory(filePath, zipFilePath, CompressionLevel.Fastest, false);
 }

本文基于.NET 4.5 压缩的使用到此结束。多用心去倾听别人怎样说，不要急着表达你自我的看法。小编再次感谢大家对我们的支持！