unzipclass.cs

这是一款系统系统备份的软件

/// <summary> 
/// 解压文件 
/// </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] + fileName);

                    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();
        }
    }
}