C#压缩解压缩（文件夹里包含文件夹）

2）引用SharpZipLib.dll，在项目中点击项目右键-->添加引用-->浏览，找到要添加的DLL-->确认

3）改写了文件压缩和解压缩的两个类，新建两个类名字为ZipFloClass.cs,UnZipFloClass.cs

源码如下

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.IO;

using ICSharpCode.SharpZipLib.Checksums;

using ICSharpCode.SharpZipLib.Zip;

using ICSharpCode.SharpZipLib.GZip;

/// <summary>

/// ZipFloClass 的摘要说明

/// </summary>

public class ZipFloClass

{

public void ZipFile(string strFile, string strZip)

{

if (strFile[strFile.Length - 1] != Path.DirectorySeparatorChar)

strFile += Path.DirectorySeparatorChar;

ZipOutputStream s = new ZipOutputStream(File.Create(strZip));

s.SetLevel(6); // 0 - store only to 9 - means best compression

zip(strFile, s, strFile);

s.Finish();

s.Close();

}

private void zip(string strFile, ZipOutputStream s, string staticFile)

{

if (strFile[strFile.Length - 1] != Path.DirectorySeparatorChar) strFile += Path.DirectorySeparatorChar;

Crc32 crc = new Crc32();

string[] filenames = Directory.GetFileSystemEntries(strFile);

foreach (string file in filenames)

{

if (Directory.Exists(file))

{

zip(file, s, staticFile);

}

else // 否则直接压缩文件

{

//打开压缩文件

FileStream fs = File.OpenRead(file);

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

fs.Read(buffer, 0, buffer.Length);

string tempfile = file.Substring(staticFile.LastIndexOf("\\") + 1);

ZipEntry entry = new ZipEntry(tempfile);

entry.DateTime = DateTime.Now;

entry.Size = fs.Length;

fs.Close();

crc.Reset();

crc.Update(buffer);

entry.Crc = crc.Value;

s.PutNextEntry(entry);

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

}

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using System;

using System.Data;

using System.Web;

using System.Text;

using System.Collections;

using System.IO;

using System.Diagnostics;

using System.Runtime.Serialization.Formatters.Binary;

using ICSharpCode.SharpZipLib.BZip2;

using ICSharpCode.SharpZipLib.Zip;

using ICSharpCode.SharpZipLib.Zip.Compression;

using ICSharpCode.SharpZipLib.Zip.Compression.Streams;

using ICSharpCode.SharpZipLib.GZip;

using ICSharpCode.SharpZipLib.Checksums;

/// <summary>

/// UnZipFloClass 的摘要说明

/// </summary>

public class UnZipFloClass

{

public string unZipFile(string TargetFile, string fileDir)

{

string rootFile = " ";

try

{

//读取压缩文件(zip文件)，准备解压缩

ZipInputStream s = new ZipInputStream(File.OpenRead(TargetFile.Trim()));

ZipEntry theEntry;

string path = fileDir;

//解压出来的文件保存的路径

string rootDir = " ";

//根目录下的第一个子文件夹的名称

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

{

rootDir = Path.GetDirectoryName(theEntry.Name);

//得到根目录下的第一级子文件夹的名称

if (rootDir.IndexOf("\\") >= 0)

{

rootDir = rootDir.Substring(0, rootDir.IndexOf("\\") + 1);

}

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

//根目录下的第一级子文件夹的下的文件夹的名称

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

//根目录下的文件名称

if (dir != " " )

//创建根目录下的子文件夹,不限制级别

{

if (!Directory.Exists(fileDir + "\\" + dir))

{

path = fileDir + "\\" + dir;

//在指定的路径创建文件夹

Directory.CreateDirectory(path);

}

else if (dir == " " && fileName != "")

//根目录下的文件

{

path = fileDir;

rootFile = fileName;

}

else if (dir != " " && fileName != "")

//根目录下的第一级子文件夹下的文件

{

if (dir.IndexOf("\\") > 0)

//指定文件保存的路径

{

path = fileDir + "\\" + dir;

}

if (dir == rootDir)

//判断是不是需要保存在根目录下的文件

{

path = fileDir + "\\" + rootDir;

}

//以下为解压缩zip文件的基本步骤

//基本思路就是遍历压缩文件里的所有文件，创建一个相同的文件。

if (fileName != String.Empty)

{

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

return rootFile;

}

catch (Exception ex)

{

return "1; " + ex.Message;

}

4）引用，新建一个页面，添加两个按钮，为按钮添加Click事件

源码如下

protected void Button1_Click(object sender, EventArgs e)

{

string[] FileProperties = new string[2];

FileProperties[0] = "D:\\unzipped\\";//待压缩文件目录

FileProperties[1] = "D:\\zip\\a.zip"; //压缩后的目标文件

ZipFloClass Zc = new ZipFloClass();

Zc.ZipFile(FileProperties[0], FileProperties[1]);

}

protected void Button2_Click(object sender, EventArgs e)

{

string[] FileProperties = new string[2];

FileProperties[0] = "D:\\zip\\b.zip";//待解压的文件

FileProperties[1] = "D:\\unzipped\\";//解压后放置的目标目录

UnZipFloClass UnZc = new UnZipFloClass();

UnZc.unZipFile(FileProperties[0], FileProperties[1]);

}

1）下载SharpZipLib.dll，在http://www.icsharpcode.net/OpenSource/SharpZipLib/Download.aspx中有最新免费版本，“Assemblies for .NET 1.1, .NET 2.0, .NET CF 1.0, .NET CF 2.0: Download [297 KB] ”点击Download可以下载，解压后里边有好多文件夹，因为不同的版本，我用的FW2.0。2）引用SharpZipLib.dll，在项目中点击项目右键-->添加引用-->浏览，找到要添加的DLL-->确认3）改写了文件压缩和解压缩的两个类，新建两个类名字为ZipFloClass.cs,UnZipFloClass.cs源码如下using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.IO;using ICSharpCode.SharpZipLib.Checksums;using ICSharpCode.SharpZipLib.Zip;using ICSharpCode.SharpZipLib.GZip;/// <summary>/// ZipFloClass 的摘要说明/// </summary>public class ZipFloClass{   public void ZipFile(string strFile, string strZip)   {   if (strFile[strFile.Length - 1] != Path.DirectorySeparatorChar)   strFile += Path.DirectorySeparatorChar;   ZipOutputStream s = new ZipOutputStream(File.Create(strZip));   s.SetLevel(6); // 0 - store only to 9 - means best compression   zip(strFile, s, strFile);   s.Finish();   s.Close();   }
   private void zip(string strFile, ZipOutputStream s, string staticFile)   {   if (strFile[strFile.Length - 1] != Path.DirectorySeparatorChar) strFile += Path.DirectorySeparatorChar;   Crc32 crc = new Crc32();   string[] filenames = Directory.GetFileSystemEntries(strFile);   foreach (string file in filenames)   {   if (Directory.Exists(file))   {   zip(file, s, staticFile);   }   else // 否则直接压缩文件   {   //打开压缩文件   FileStream fs = File.OpenRead(file);   byte[] buffer = new byte[fs.Length];   fs.Read(buffer, 0, buffer.Length);   string tempfile = file.Substring(staticFile.LastIndexOf("\\") + 1);   ZipEntry entry = new ZipEntry(tempfile);   entry.DateTime = DateTime.Now;   entry.Size = fs.Length;   fs.Close();   crc.Reset();   crc.Update(buffer);   entry.Crc = crc.Value;   s.PutNextEntry(entry);   s.Write(buffer, 0, buffer.Length);   }   }   }} 、、、、、、、、、、、、、、、using System;using System.Data;using System.Web;using System.Text;using System.Collections;using System.IO;using System.Diagnostics;using System.Runtime.Serialization.Formatters.Binary;using ICSharpCode.SharpZipLib.BZip2;using ICSharpCode.SharpZipLib.Zip;using ICSharpCode.SharpZipLib.Zip.Compression;using ICSharpCode.SharpZipLib.Zip.Compression.Streams;using ICSharpCode.SharpZipLib.GZip;using ICSharpCode.SharpZipLib.Checksums;
/// <summary>/// UnZipFloClass 的摘要说明/// </summary>public class UnZipFloClass{   public string unZipFile(string TargetFile, string fileDir)   {   string rootFile = " ";   try   {   //读取压缩文件(zip文件)，准备解压缩   ZipInputStream s = new ZipInputStream(File.OpenRead(TargetFile.Trim()));   ZipEntry theEntry;   string path = fileDir;      //解压出来的文件保存的路径   string rootDir = " ";     //根目录下的第一个子文件夹的名称   while ((theEntry = s.GetNextEntry()) != null)   {   rootDir = Path.GetDirectoryName(theEntry.Name);     //得到根目录下的第一级子文件夹的名称   if (rootDir.IndexOf("\\") >= 0)   {   rootDir = rootDir.Substring(0, rootDir.IndexOf("\\") + 1);   }   string dir = Path.GetDirectoryName(theEntry.Name);     //根目录下的第一级子文件夹的下的文件夹的名称   string fileName = Path.GetFileName(theEntry.Name);     //根目录下的文件名称   if (dir != " " )     //创建根目录下的子文件夹,不限制级别   {   if (!Directory.Exists(fileDir + "\\" + dir))   {   path = fileDir + "\\" + dir;     //在指定的路径创建文件夹   Directory.CreateDirectory(path);   }   }   else if (dir == " " && fileName != "")     //根目录下的文件   {   path = fileDir;   rootFile = fileName;   }   else if (dir != " " && fileName != "")     //根目录下的第一级子文件夹下的文件   {   if (dir.IndexOf("\\") > 0)     //指定文件保存的路径   {   path = fileDir + "\\" + dir;   }   }   if (dir == rootDir)     //判断是不是需要保存在根目录下的文件   {   path = fileDir + "\\" + rootDir;   }   //以下为解压缩zip文件的基本步骤   //基本思路就是遍历压缩文件里的所有文件，创建一个相同的文件。   if (fileName != String.Empty)   {   FileStream streamWriter = File.Create(path + "\\" + 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();   return rootFile;   }   catch (Exception ex)   {   return "1; " + ex.Message;   }   }   }4）引用，新建一个页面，添加两个按钮，为按钮添加Click事件源码如下  protected void Button1_Click(object sender, EventArgs e)   {   string[] FileProperties = new string[2];   FileProperties[0] = "D:\\unzipped\\";//待压缩文件目录   FileProperties[1] = "D:\\zip\\a.zip"; //压缩后的目标文件   ZipFloClass Zc = new ZipFloClass();   Zc.ZipFile(FileProperties[0], FileProperties[1]);   }   protected void Button2_Click(object sender, EventArgs e)   {   string[] FileProperties = new string[2];   FileProperties[0] = "D:\\zip\\b.zip";//待解压的文件   FileProperties[1] = "D:\\unzipped\\";//解压后放置的目标目录   UnZipFloClass UnZc = new UnZipFloClass();   UnZc.unZipFile(FileProperties[0], FileProperties[1]);   }