C#压缩与解压缩(zip文件)

C#压缩与解压缩(zip文件)----ZipClass.cs

using System;
using System.IO;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;
namespace MyWinzip
{
 ///
 /// Class1 的摘要说明。
 ///
 public class ZipClass
 {
  public void ZipFile(string FileToZip, string ZipedFile ,int CompressionLevel, int BlockSize)
  {
   //如果文件没有找到，则报错
   if (! System.IO.File.Exists(FileToZip))
   {
    throw new System.IO.FileNotFoundException("The specified file " + FileToZip + " could not be found. Zipping aborderd");
   }
 
   System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip,System.IO.FileMode.Open , System.IO.FileAccess.Read);
   System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);
   ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);
   ZipEntry ZipEntry = new ZipEntry("ZippedFile");
   ZipStream.PutNextEntry(ZipEntry);
   ZipStream.SetLevel(CompressionLevel);
   byte[] buffer = new byte[BlockSize];
   System.Int32 size =StreamToZip.Read(buffer,0,buffer.Length);
   ZipStream.Write(buffer,0,size);
   try
   {
    while (size < StreamToZip.Length)
    {
     int sizeRead =StreamToZip.Read(buffer,0,buffer.Length);
     ZipStream.Write(buffer,0,sizeRead);
     size += sizeRead;
    }
   }
   catch(System.Exception ex)
   {
    throw ex;
   }
   ZipStream.Finish();
   ZipStream.Close();
   StreamToZip.Close();
  }
 
  public void ZipFileMain(string[] args)
  {
   string[] filenames = Directory.GetFiles(args[0]);
 
   Crc32 crc = new Crc32();
   ZipOutputStream s = new ZipOutputStream(File.Create(args[1]));
 
   s.SetLevel(6); // 0 - store only to 9 - means best compression
 
   foreach (string file in filenames)
   {
    //打开压缩文件
    FileStream fs = File.OpenRead(file);
  
    byte[] buffer = new byte[fs.Length];
    fs.Read(buffer, 0, buffer.Length);
    ZipEntry entry = new ZipEntry(file);
  
    entry.DateTime = DateTime.Now;
  
    // set Size and the crc, because the information
    // about the size and crc should be stored in the header
    // if it is not set it is automatically written in the footer.
    // (in this case size == crc == -1 in the header)
    // Some ZIP programs have problems with zip files that don't store
    // the size and crc in the header.
    entry.Size = fs.Length;
    fs.Close();
  
    crc.Reset();
    crc.Update(buffer);
  
    entry.Crc  = crc.Value;
  
    s.PutNextEntry(entry);
  
    s.Write(buffer, 0, buffer.Length);
  
   }
 
   s.Finish();
   s.Close();
  }

 }
}

C#压缩与解压缩(zip文件)----UnZipClass.cs

using System;
using System.Text;
using System.Collections;
using System.IO;
using System.Diagnostics;
using System.Runtime.Serialization.Formatters.Binary;
using System.Data;

using ICSharpCode.SharpZipLib.BZip2;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Zip.Compression;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
using ICSharpCode.SharpZipLib.GZip;
namespace MyWinzip
{
 ///
 /// Class1 的摘要说明。
 ///
 public class UnZipClass
 {
  public void UnZip(string[] args)
  {
   ZipInputStream s = new ZipInputStream(File.OpenRead(args[0]));
 
   ZipEntry theEntry;
   while ((theEntry = s.GetNextEntry()) != null)
   {
  
    string directoryName = Path.GetDirectoryName(args[1]);
    string fileName      = Path.GetFileName(theEntry.Name);
  
    //生成解压目录
    Directory.CreateDirectory(directoryName);
  
    if (fileName != String.Empty)
    {  
     //解压文件到指定的目录
     string path=args[1]+"//"+theEntry.Name;
     FileStream streamWriter = File.Create(path);
   
     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();
  }

 }
}

C#压缩与解压缩(zip文件)----解压缩应用

新建MyWinzip工程,引用SharpZipLib.dll ,然后添加UnZipClass.cs 和ZipClass.cs

编译成MyWinzip.dll,即可使用.

using MyWinzip;

private void button1_Click(object sender, System.EventArgs e)
  {
   this.openFileDialog1.ShowDialog();
            string filename=this.openFileDialog1.FileName;//待解压的文件
   int i=filename.LastIndexOf(".");
   string filepath=filename.Substring(0,i)+"//";                 //解压后放置的目标目录

   string []FileProperties=new string[2];
   FileProperties[0]=filename;
   FileProperties[1]=filepath;
   UnZipClass UnZc=new UnZipClass();
   UnZc.UnZip(FileProperties);

  }

C#压缩与解压缩(zip文件)----web上载zip文件,并解压缩

将*.dll文件解压到指定目录,将*.txt文件内容(xml)读取.

private void Button2_Click(object sender, System.EventArgs e)
  {
   try
   {
    
    string filename=upload.PostedFile.FileName;//待解压的文件
    string unzippath="c:/inetpub/wwwroot/maxservice/dll/handle/";//解压后放置的目标目录
    if(filename!=String.Empty)
    {
     string []FileProperties=new string[2];
     FileProperties[0]=filename;
     FileProperties[1]=unzippath;
     UnZipClass UnZc=new UnZipClass();
     UnZc.UnZip(FileProperties);
     if(UnZc.XmlString!=String.Empty )
     {
        bool success=this.DecodeXml(UnZc.XmlString);//子定义方法,解析zip文件中txt文件内容(xml.)
        if(success)
         this.Label1.Text="上载成功.";
      else
         this.Label1.Text="上载失败.";
     }

    }
   }
   catch(Exception ex)
   {
    throw new Exception(ex.Message);
   }
  }