首先需要在项目里引用sharpziplib.dll。然后修改其中的关于压缩和解压缩的类。实现源码如下：
///
/// 压缩文件
///
using System;
using System.IO;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;
namespace Compression
{
publicclass ZipClass
{
publicvoid 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))
{
thrownew 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 = newbyte[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();
}
publicvoid 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 = newbyte[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();
}
}
}
现在再来看看解压文件类的源码
///
/// 解压文件
///
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 DeCompression
{
publicclass UnZipClass
{
publicvoid 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
FileStream streamWriter = File.Create(args[1]+theEntry.Name);
int size = 2048;
byte[] data = newbyte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
streamwriter.close();
}
}
s.Close();
}
}
}
有了压缩和解压缩的类以后，就要在窗体里调用了。怎么？是新手，不会调用？ok,接着往下看如何在窗体里调用。
首先在窗体里放置两个命令按钮（不要告诉我你不会放啊~），然后编写以下源码
///
/// 调用源码
///
privatevoid button2_Click_1(object sender, System.EventArgs e)
{
string []FileProperties=newstring[2];
FileProperties[0]="C:\\unzipped\\";//待压缩文件目录
FileProperties[1]="C:\\zip\\a.zip"; //压缩后的目标文件
ZipClass Zc=new ZipClass();
Zc.ZipFileMain(FileProperties);
}
private void button2_Click(object sender, System.EventArgs e)
{
string []FileProperties=new string[2];
FileProperties[0]="C:\\zip\\test.zip";//待解压的文件
FileProperties[1]="C:\\unzipped\\";//解压后放置的目标目录
UnZipClass UnZc=new UnZipClass();
UnZc.UnZip(FileProperties);
}
好了，到此为止，如何压缩和解压缩的类都已经完成了，需要的朋友直接拿走调吧。