c#压缩文件
使用
ICSharpCode.SharpZipLib.dll
下载地址：
http://www.icsharpcode.net/OpenSource/SharpZipLib/
using ICSharpCode.SharpZipLib.GZip;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
代码：
压缩到文件
private void btnZip_Click(object sender, System.EventArgs e)
{
string filename;
ZipOutputStream zos;
FileStream fs;
Crc32 crc = new Crc32();
OpenFileDialog openfileDialog = new OpenFileDialog();
//openfileDialog.InitialDirectory = "c:\\" ;
openfileDialog.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*" ;
openfileDialog.FilterIndex = 2 ;
openfileDialog.RestoreDirectory = false ;
if(openfileDialog.ShowDialog() == DialogResult.OK)
{
filename = Path.GetFileName(openfileDialog.FileName);
zos = new ZipOutputStream(File.Create(filename + ".zip"));
zos.SetLevel(6);
fs = File.OpenRead(filename);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
this.richTextBox1.Text=Encoding.UTF8.GetString(buffer);
ZipEntry entry = new ZipEntry(filename);
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
zos.PutNextEntry(entry);
zos.Write(buffer, 0, buffer.Length);
zos.Finish();
zos.Close();
}
}
压缩到内存
private void btnZipOneText_Click(object sender, System.EventArgs e)
{
msFileIn = new MemoryStream();
//this.statusBarPanel1.Text="正在压缩编码第一个文本框里的数据 ... ...";
byte[] getchr = Encoding.UTF8.GetBytes(this.richTextBox1.Text.ToString());
ZipOutputStream zos = new ZipOutputStream(msFileIn);
zos.SetLevel(6);
ZipEntry entry = new ZipEntry("Stream");
Crc32 crc = new Crc32();
crc.Reset();
crc.Update(getchr);
entry.Crc = crc.Value;
entry.DateTime = DateTime.Now;
entry.Size = getchr.Length;
zos.PutNextEntry(entry);
zos.Write(getchr,0,getchr.Length);
zos.Finish();
zos.Close();
MessageBox.Show("压缩完成，结果存入内存！");
//this.statusBarPanel1.Text = "第一个文本框里的数据压缩完成。";
}
解压文件
private void btnUnZip_Click(object sender, System.EventArgs e)
{
string filename;
OpenFileDialog openfileDialog = new OpenFileDialog();
//openfileDialog.InitialDirectory = "c:\\" ;
openfileDialog.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*" ;
openfileDialog.FilterIndex = 2 ;
openfileDialog.RestoreDirectory = false ;
if(openfileDialog.ShowDialog() == DialogResult.OK)
{
filename = Path.GetFileName(openfileDialog.FileName);
ZipInputStream zis = new ZipInputStream(File.OpenRead(filename));
ZipEntry theEntry;
while ((theEntry = zis.GetNextEntry()) != null)
{
//string directoryName = Path.GetDirectoryName(theEntry.Name);
//Directory.CreateDirectory(directoryName);
string fileName = Path.GetFileName(theEntry.Name);
if (fileName != String.Empty)
{
FileStream streamWriter = File.Create(theEntry.Name);
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = zis.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
streamWriter.Close();
}
}
zis.Close();
}
}
from:http://tb.blog.csdn.net/TrackBack.aspx?PostId=296861
II------------------no2
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();
}
}
}
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();
}
}
}
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);
}
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);
}
}
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