在企业开发过程中经常会遇到文件的压缩与解压，虽然网上很多流行的压缩文件格式都是RAR的，但是由于RAR不是一个开放的标准，因此ZIP成了更多人的选择。如果你不想自己开发的话可以选择开源的项目，比如SharpZipLib就是一个不错的选择。
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(); // 压缩级别 0-9
//s.Password = "123"; //Zip压缩文件密码
byte[] buffer = new byte[]; //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, , buffer.Length);
s.Write(buffer, , sourceBytes);
} while (sourceBytes > );
}
}
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 > )
{
Directory.CreateDirectory(directoryName);
} if (fileName != String.Empty)
{
using (FileStream streamWriter = File.Create(theEntry.Name))
{ int size = ;
byte[] data = new byte[];
while (true)
{
size = s.Read(data, , data.Length);
if (size > )
{
streamWriter.Write(data, , size);
}
else
{
break;
}
}
}
}
}
}
}
}
}