首先需要在項目裡引用sharpziplib.dll。然後修改其中的關於壓縮和解壓縮的類。實現源碼如下：
/// <summary>
/// 壓縮文件
/// </summary>
using System;
using System.IO;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;
namespace Compression
{
public class ZipClass
{
public void ZipFile(string FileToZip, string ZipedFile ,int CompressionLevel, int BlockSize)
{
//如果文件沒有找到，則報錯
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)
{
//打開壓縮文件
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();
}
}
}
現在再來看看解壓文件類的源碼
/// <summary>
/// 解壓文件
/// </summary>
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
{
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);
//生成解壓目錄
Directory.CreateDirectory(directoryName);
if (fileName != String.Empty)
{
//解壓文件到指定的目錄
FileStream streamWriter = File.Create(args[1]+theEntry.Name);
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();
}
}
}
有了壓縮和解壓縮的類以後，就要在窗體裡調用了。怎麼？是新手，不會調用？ok,接著往下看如何在窗體裡調用。
首先在窗體裡放置兩個命令按鈕（不要告訴我你不會放啊~），然後編寫以下源碼
/// <summary>
/// 調用源碼
/// </summary>
private void button2_Click_1(object sender, System.EventArgs e)
{
string []FilePropertIEs=new string[2];
FilePropertIEs[0]="C:\\unzipped\\";//待壓縮文件目錄
FilePropertIEs[1]="C:\\zip\\a.zip"; //壓縮後的目標文件
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";//待解壓的文件
FilePropertIEs[1]="C:\\unzipped\\";//解壓後放置的目標目錄
UnZipClass UnZc=new UnZipClass();
UnZc.UnZip(FilePropertIEs);
}
好了，到此為止，如何壓縮和解壓縮的類都已經完成了，需要的朋友直接拿走調吧。
