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首先需要在项目里引用sharpziplib.dll
ZipClass.cs 类函数 包括压缩和解压 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;
using ICSharpCode.SharpZipLib.Checksums;
namespace Updatezip
{#region 压缩文件类/// summary/// 压缩文件 /// /summarypublic 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 dont 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();}}
#endregion#region 解压文件类/// summary/// 解压文件/// /summarypublic 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 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();}}
#endregion
}调用方法 /// summary
/// 调用源码
/// /summary
private void button2_Click_1(object sender, System.EventArgs e)
{ string[] FileProperties new string[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);
}
