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;                }              }            }          }        }      }    }  }}