C# zip压缩

/**//*

* 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;

}

}

}

}

}

}

}

}

}