windows mobile 上文件压缩与解压缩(使用ICSharpCode.SharpZipLib.Zip)

using System;

using System.Linq;

using System.Collections.Generic;

using System.Text;

using ICSharpCode.SharpZipLib.Zip;//ZipOutputStream

using System.IO;//FileMode

namespace quietwalk.ZipUnZip

{

public class SharpZipHelper

{

/// <summary>

/// 压缩指定文件生成ZIP文件

/// </summary>

/// <param name="topDirName">顶层文件夹名称</param>

/// <param name="fileNamesToZip">待压缩文件列表</param>

/// <param name="ZipedFileName">ZIP文件</param>

/// <param name="CompressionLevel">压缩比</param>

/// <param name="password">密码</param>

/// <param name="comment">压缩文件注释文字</param>

public static void ZipFile

(

string topDirName, //顶层文件夹名称 \Storage Card\PDADataExchange\send\xml\

string[] fileNamesToZip, //待压缩文件列表 version.xml

string ZipedFileName, //ZIP文件 \Storage Card\PDADataExchange\send\zip\version.zip

int CompressionLevel, //压缩比 7

string password, //密码 ""

string comment //压缩文件注释文字 ""

)

{

ZipOutputStream s = new ZipOutputStream(System.IO.File.Open(ZipedFileName, FileMode.Create));

if(password != null && password.Length > 0)

s.Password = password;

if(comment != null && comment.Length >0)

s.SetComment(comment);

s.SetLevel(CompressionLevel); // 0 - means store only to 9 - means best compression

foreach (string file in fileNamesToZip)

{

FileStream fs = File.OpenRead(topDirName + file); //打开待压缩文件

byte[] buffer = new byte[fs.Length];

fs.Read(buffer, 0, buffer.Length); //读取文件流

ZipEntry entry = new ZipEntry(file); //新建实例

entry.DateTime = DateTime.Now;

entry.Size = fs.Length;

fs.Close();

s.PutNextEntry(entry);

s.Write(buffer, 0, buffer.Length);

}

s.Finish();

s.Close();

}

/// <summary>

/// 解压缩ZIP文件到指定文件夹

/// </summary>

/// <param name="zipfileName">ZIP文件</param>

/// <param name="UnZipDir">解压文件夹</param>

/// <param name="password">压缩文件密码</param>

public static void UnZipFile(string zipfileName, string UnZipDir, string password)

{

//zipfileName=@"\Storage Card\PDADataExchange\receive\zip\test.zip";

//UnZipDir= @"\Storage Card\PDADataExchange\receive\xml\";

//password="";

ZipInputStream s = new ZipInputStream(File.OpenRead(zipfileName));

if (password != null && password.Length > 0)

s.Password = password;

try

{

ZipEntry theEntry;

while ((theEntry = s.GetNextEntry()) != null)

{

string directoryName = Path.GetDirectoryName(UnZipDir);

string pathname = Path.GetDirectoryName(theEntry.Name);

string fileName = Path.GetFileName(theEntry.Name);

//生成解压目录

pathname = pathname.Replace(":", "$");//处理压缩时带有盘符的问题

directoryName = directoryName + "\\" + pathname;

Directory.CreateDirectory(directoryName);

if (fileName != String.Empty)

{

//解压文件到指定的目录

FileStream streamWriter = File.Create(directoryName + "\\" + fileName);

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;

}

}

streamWriter.Close();

}

}

s.Close();

}

catch (Exception eu)

{

throw eu;

}

finally

{

s.Close();

}

}

}

}