C#实现文件压缩与解压的方法示例【ZIP格式】

 /* * Gary Zhang -- cbcye@live.com * www.cbcye.com * www.quicklearn.cn * cbcye.cnblogs.com */ using System; using System.Collections.Generic; using System.Text; using System.IO; using ICSharpCode.SharpZipLib.Zip; using System.Diagnostics; using ICSharpCode.SharpZipLib.Core; namespace TestConsole { class Program { static void Main() { //CreateZipFile(@"d:\", @"d:\a.zip"); UnZipFile(@"d:\a.zip"); Console.Read(); } private static void CreateZipFile(string filesPath, string zipFilePath) { if (!Directory.Exists(filesPath)) { Console.WriteLine("Cannot find directory '{0}'", filesPath); return; } try { string[] filenames = Directory.GetFiles(filesPath); using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath))) { s.SetLevel(9); // 压缩级别 0-9 //s.Password = "123"; //Zip压缩文件密码 byte[] buffer = new byte[4096]; //缓冲区大小 foreach (string file in filenames) { ZipEntry entry = new ZipEntry(Path.GetFileName(file)); entry.DateTime = DateTime.Now; s.PutNextEntry(entry); using (FileStream fs = File.OpenRead(file)) { int sourceBytes; do { sourceBytes = fs.Read(buffer, 0, buffer.Length); s.Write(buffer, 0, sourceBytes); } while (sourceBytes > 0); } } s.Finish(); s.Close(); } } catch (Exception ex) { Console.WriteLine("Exception during processing {0}", ex); } } private static void UnZipFile( string zipFilePath) { if (!File.Exists(zipFilePath)) { Console.WriteLine("Cannot find file '{0}'", zipFilePath); return; } using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath))) { ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) != null) { Console.WriteLine(theEntry.Name); string directoryName = Path.GetDirectoryName(theEntry.Name); string fileName = Path.GetFileName(theEntry.Name); // create directory if (directoryName.Length > 0) { Directory.CreateDirectory(directoryName); } if (fileName != String.Empty) { using (FileStream streamWriter = File.Create(theEntry.Name)) { int size = 2048; byte[] data = new byte[2048]; while (true) { size = s.Read(data, 0, data.Length); if (size > 0) { streamWriter.Write(data, 0, size); } else { break; } } } } } } } } }