using System;using System.Linq;using System.IO;using ICSharpCode.SharpZipLib.Zip;using ICSharpCode.SharpZipLib.Checksums;using System.Diagnostics;using Microsoft.Win32;namespace ZipCommon{    public class ZipHelper    {        #region 压缩多个文件        /// <summary>          ///  压缩多个文件          /// </summary>          /// <param name="files">文件名</param>          /// <param name="ZipedFileName">压缩包文件名</param>          /// <param name="Password">解压码</param>          /// <returns></returns>          public static void Zip(string[] files, string ZipedFileName, string Password)        {            files = files.Where(f => File.Exists(f)).ToArray();            if (files.Length == 0) throw new FileNotFoundException("未找到指定打包的文件");            ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFileName));            s.SetLevel(6);            if (!string.IsNullOrEmpty(Password.Trim())) s.Password = Password.Trim();            ZipFileDictory(files, s);            s.Finish();            s.Close();        }        /// <summary>          ///  压缩多个文件          /// </summary>          /// <param name="files">文件名</param>          /// <param name="ZipedFileName">压缩包文件名</param>          /// <returns></returns>          public static void Zip(string[] files, string ZipedFileName)        {            Zip(files, ZipedFileName, string.Empty);        }        private static void ZipFileDictory(string[] files, ZipOutputStream s)        {            ZipEntry entry = null;            FileStream fs = null;            Crc32 crc = new Crc32();            try            {                //创建当前文件夹                  entry = new ZipEntry("/");  //加上 “/” 才会当成是文件夹创建                  s.PutNextEntry(entry);                s.Flush();                foreach (string file in files)                {                    //打开压缩文件                      fs = File.OpenRead(file);                    byte[] buffer = new byte[fs.Length];                    fs.Read(buffer, 0, buffer.Length);                    entry = new ZipEntry("/" + Path.GetFileName(file));                    entry.DateTime = DateTime.Now;                    entry.Size = fs.Length;                    fs.Close();                    crc.Reset();                    crc.Update(buffer);                    entry.Crc = crc.Value;                    s.PutNextEntry(entry);                    s.Write(buffer, 0, buffer.Length);                }            }            finally            {                if (fs != null)                {                    fs.Close();                    fs = null;                }                if (entry != null)                    entry = null;                GC.Collect();            }        }        #endregion 压缩多个文件        #region  解压文件 包括.rar 和zip        /// <summary>        ///解压文件        /// </summary>        /// <param name="fileFromUnZip">解压前的文件路径（绝对路径）</param>        /// <param name="fileToUnZip">解压后的文件目录（绝对路径）</param>        public static void UnpackFileRarOrZip(string fileFromUnZip, string fileToUnZip)        {            //获取压缩类型            string unType = fileFromUnZip.Substring(fileFromUnZip.LastIndexOf(".") + 1, 3).ToLower();            switch (unType)            {                case "rar":                    UnRar(fileFromUnZip, fileToUnZip);                    break;                default:                    UnZip(fileFromUnZip, fileToUnZip);                    break;            }        }        #endregion        #region  解压文件 .rar文件        /// <summary>        /// 解压        /// </summary>        /// <param name="unRarPatch"></param>        /// <param name="rarPatch"></param>        /// <param name="rarName"></param>        /// <returns></returns>        public static void UnRar(string fileFromUnZip, string fileToUnZip)        {            string the_rar;            RegistryKey the_Reg;            object the_Obj;            string the_Info;            try            {                the_Reg = Registry.LocalMachine.OpenSubKey(                         @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe");                the_Obj = the_Reg.GetValue("");                the_rar = the_Obj.ToString();                the_Reg.Close();                //the_rar = the_rar.Substring(1, the_rar.Length - 7);                if (Directory.Exists(fileToUnZip) == false)                {                    Directory.CreateDirectory(fileToUnZip);                }                the_Info = "x " + Path.GetFileName(fileFromUnZip) + " " + fileToUnZip + " -y";                ProcessStartInfo the_StartInfo = new ProcessStartInfo();                the_StartInfo.FileName = the_rar;                the_StartInfo.Arguments = the_Info;                the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;                the_StartInfo.WorkingDirectory = Path.GetDirectoryName(fileFromUnZip);//获取压缩包路径                Process the_Process = new Process();                the_Process.StartInfo = the_StartInfo;                the_Process.Start();                the_Process.WaitForExit();                the_Process.Close();            }            catch (Exception ex)            {                throw ex;            }            //return unRarPatch;        }        #endregion        #region  解压文件 .zip文件        /// <summary>        /// 解压功能(解压压缩文件到指定目录)        /// </summary>        /// <param name="FileToUpZip">待解压的文件</param>        /// <param name="ZipedFolder">指定解压目标目录</param>        public static void UnZip(string FileToUpZip, string ZipedFolder)        {            if (!File.Exists(FileToUpZip))            {                return;            }            if (!Directory.Exists(ZipedFolder))            {                Directory.CreateDirectory(ZipedFolder);            }            ICSharpCode.SharpZipLib.Zip.ZipInputStream s = null;            ICSharpCode.SharpZipLib.Zip.ZipEntry theEntry = null;            string fileName;            FileStream streamWriter = null;            try            {                s = new ICSharpCode.SharpZipLib.Zip.ZipInputStream(File.OpenRead(FileToUpZip));                while ((theEntry = s.GetNextEntry()) != null)                {                    if (theEntry.Name != String.Empty)                    {                        fileName = Path.Combine(ZipedFolder, theEntry.Name);                        ///判断文件路径是否是文件夹                        if (fileName.EndsWith("/") || fileName.EndsWith("\\"))                        {                            Directory.CreateDirectory(fileName);                            continue;                        }                        streamWriter = File.Create(fileName);                        int size = 2048;                        byte[] data = http://www.mamicode.com/new byte[2048];                        while (true)                        {                            size = s.Read(data, 0, data.Length);                            if (size > 0)                            {                                streamWriter.Write(data, 0, size);                            }                            else                            {                                break;                            }                        }                    }                }            }            finally            {                if (streamWriter != null)                {                    streamWriter.Close();                    streamWriter = null;                }                if (theEntry != null)                {                    theEntry = null;                }                if (s != null)                {                    s.Close();                    s = null;                }                GC.Collect();                GC.Collect(1);            }        }        #endregion    }}