C#实现的文件压缩和解压缩类实现的文件压缩和解压缩类
本文实例讲述了C#实现的文件压缩和解压缩类。分享给大家供大家参考。具体分析如下:
这个C#代码包含了几个类,封装了文件压缩和解压缩常用的方法,包括直接通过代码进行压缩,也有调用winrar对文件进行压
缩的
using System;
using System.IO;
using System.Diagnostics;
using Microsoft.Win32;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
///压缩、解压缩类
namespace DotNet.Utilities
{
public class SharpZip
{
public SharpZip()
{ }
/// <summary>
/// 压缩
/// </summary>
/// <param name="filename"> 压缩后的文件名(包含物理路径)</param>
/// <param name="directory">待压缩的文件夹(包含物理路径)</param>
public static void PackFiles(string filename, string directory)
{
try
{
FastZip fz = new FastZip();
fz.CreateEmptyDirectories = true;
fz.CreateZip(filename, directory, true, "");
fz = null;
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 解压缩
/// </summary>
/// <param name="file">待解压文件名(包含物理路径)</param>
/// <param name="dir"> 解压到哪个目录中(包含物理路径)</param>
public static bool UnpackFiles(string file, string dir)
{
try
{
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
ZipInputStream s = new ZipInputStream(File.OpenRead(file));
ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
if (directoryName != String.Empty)
{
Directory.CreateDirectory(dir + directoryName);
}
if (fileName != String.Empty)
{
FileStream streamWriter = File.Create(dir + 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;
}