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
{
/// <summary></summary>
/// 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
{
/// <summary></summary>
/// 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);
}
}