Windows系统中C#调用WinRAR来压缩和解压缩文件的方法

过程说明都在注释里，我们直接来看代码：
压缩：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.IO;

using ICSharpCode.SharpZipLib.Zip;

using System.Diagnostics;

public class winrar

{
  #region 压缩文件

  /// <summary>

  /// 压缩文件

  /// </summary>

  /// <param name="filesPath">压缩文件及完整路径(D:\abc)</param>

  /// <param name="zipFilePath">压缩包所存完整路径(D:\a.zip或d:\a.rar)</param>

  public static void CreateZipFile(string filesPath, string zipFilePath)

  {

    if (!Directory.Exists(filesPath))

    {

      Console.WriteLine("Cannot find directory '{0}'", filesPath);

      return;

    }

    try

    {

      string[] filenames = Directory.GetFiles(filesPath);

      using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath)))

      {

        s.SetLevel(9); // 压缩级别 0-9

        //s.Password = "123"; //Zip压缩文件密码

        byte[] buffer = new byte[4096]; //缓冲区大小

        foreach (string file in filenames)

        {

          ZipEntry entry = new ZipEntry(Path.GetFileName(file));

          entry.DateTime = DateTime.Now;

          s.PutNextEntry(entry);

          using (FileStream fs = File.OpenRead(file))

          {

            int sourceBytes;

            do

            {

              sourceBytes = fs.Read(buffer, 0, buffer.Length);

              s.Write(buffer, 0, sourceBytes);

            } while (sourceBytes > 0);

          }

        }

        s.Finish();

        s.Close();

      }

    }

    catch (Exception ex)

    {

      AutoCompare.ErrorLog.SaveError(ex, "压缩文件出错！");

    }

  }

  #endregion

  #region 解压文件

  /// <summary>

  /// 解压文件

  /// </summary>

  /// <param name="zipFilePath">解压文件及完整路径(d:\a.zip或d:\a.rar)</param>

  public static void UnZipFile(string zipFilePath)

  {

    if (!File.Exists(zipFilePath))

    {

      Console.WriteLine("Cannot find file '{0}'", zipFilePath);

      return;

    }

    using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath)))

    {

      ZipEntry theEntry;

      while ((theEntry = s.GetNextEntry()) != null)

      {

        Console.WriteLine(theEntry.Name);

        string directoryName = Path.GetDirectoryName(theEntry.Name);

        string fileName = Path.GetFileName(theEntry.Name);

        // create directory

        if (directoryName.Length > 0)

        {

          Directory.CreateDirectory(directoryName);

        }

        if (fileName != String.Empty)

        {

          using (FileStream streamWriter = File.Create(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;

              }

            }

          }

        }

      }

    }

  }

  #endregion

string rarFile=@"C:\Program Files\WinRAR\WinRAR.exe";//winrar之所在的路径，这里找执行文件所在文件夹和"C:\Program Files\WinRAR\WinRAR.exe

 #region RAR压缩文件（支持路径中含有空格）

 /// <summary>

  /// 压缩到.rar

  /// </summary>

  /// <param name="intputPath">输入目录</param>

  /// <param name="outputPath">输出目录</param>

  /// <param name="outputFileName">输出文件名</param>

  public static void CompressRar(string intputPath, string outputPath, string outputFileName)

  {

    //rar 执行时的命令、参数

    string rarCmd;

    //启动进程的参数

    ProcessStartInfo processStartInfo;

    //进程对象

    Process process;

 //命令参数

 rarCmd = " a " + outputFileName + " " + intputPath + " -r -ep1";

 //rar路径

 string rarFile = System.Windows.Forms.Application.StartupPath + @"\rar.exe";

 if (outputPath.IndexOf(' ') > 0 || intputPath.IndexOf(' ') > 0)

 {

  rarCmd = " a " + outputFileName + " \"" + intputPath + "\" -r -ep1";

 }

 if (!File.Exists(System.Windows.Forms.Application.StartupPath + @"\rar.exe"))

 { 

  rarFile=@"C:\Program Files\WinRAR\WinRAR.exe";

 }

    try

    {

      //判断输入目录是否存在

      if (!Directory.Exists(intputPath))

      {

        throw new ArgumentException("CompressRar'arge : inputPath isn't exsit.");

      }

      //创建启动进程的参数

      processStartInfo = new ProcessStartInfo();

      //指定启动文件名

      processStartInfo.FileName = @"C:\Program Files\WinRAR\WinRAR.exe";

      //指定启动该文件时的命令、参数

      processStartInfo.Arguments = rarCmd;

      //指定启动窗口模式：隐藏

      processStartInfo.WindowStyle = ProcessWindowStyle.Hidden;

      //指定压缩后到达路径

      processStartInfo.WorkingDirectory = outputPath;

      //创建进程对象

      process = new Process();

      //指定进程对象启动信息对象

      process.StartInfo = processStartInfo;

      //启动进程

      process.Start();

      //指定进程自行退行为止

      process.WaitForExit();

    }

    catch (Exception ex)

    {

      throw ex;

    }

  }

 #endregion

 #region RAR解压文件（支持路径中含有空格）

 /// <summary>

 /// 解压文件

 /// </summary>

 /// <param name="outputPath">解压到的路径</param>

 /// <param name="inputPath">压缩包所在路径（解压路径需存在）</param>

 /// <param name="inputFileName">压缩包名</param>

 /// <returns></returns>

 public static void DecompressRar(string outputPath, string inputPath, string inputFileName)

 {

 //rar 执行时的命令、参数

 string rarCmd;

 //启动进程的参数

 ProcessStartInfo processStartInfo;

 //进程对象

 Process process;

 //rar路径

 string rarFile =System.Windows.Forms.Application.StartupPath + @"\rar.exe" ;

 //命令参数

 rarCmd = " e " + inputFileName + " " + outputPath + " -r -ep1";

 if (outputPath.IndexOf(' ') > 0 || inputPath.IndexOf(' ') > 0)

 {

  rarCmd = "x -inul -y -o+ -ep1 \"" + inputPath + "\\" + inputFileName + "\" \"" + outputPath+"\"";

 }

 if (!File.Exists(System.Windows.Forms.Application.StartupPath + @"\rar.exe"))

 { 

  rarFile=@"C:\Program Files\WinRAR\WinRAR.exe";

 }

 try

 {

  //创建启动进程的参数

  processStartInfo = new ProcessStartInfo();

  //指定启动文件名

  processStartInfo.FileName = rarFile;

  //指定启动该文件时的命令、参数

  processStartInfo.Arguments = rarCmd;

  //指定启动窗口模式：隐藏

  processStartInfo.WindowStyle = ProcessWindowStyle.Hidden;

  //指定解压后到达路径（文件夹需要存在）

  processStartInfo.WorkingDirectory = inputPath;

  //创建进程对象

  process = new Process();

  //指定进程对象启动信息对象

  process.StartInfo = processStartInfo;

  //启动进程

  process.Start();

  //指定进程自行退行为止

  process.WaitForExit();

  //释放资源

  process.Close();

 }

 catch (Exception ex)

 {

  throw ex;

 }

 }

 #endregion

}

解压：

class UseWinRar
  {
    private string rarExeFile = null;//WinRar.exe路径
    private bool useAble = false;//标志WinRar是否可用 

    public UseWinRar()//构造方法
    {
      rarExeFile = getRarExe();
      useAble = !string.IsNullOrEmpty(rarExeFile);//如果WinRar.exe路径不为空，说明可用
    } 

    public static string getRarExe()//获取WinRar所在磁盘路径
    {
      string rarExe = null;
      RegistryKey regKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe");
      if (regKey == null)
      {
        return null;
      }
      rarExe = regKey.GetValue("").ToString();
      regKey.Close();//关闭注册表
      return rarExe;
    } 

    public bool exeRarCmd(string cmd)//执行某个命令
    {
      if (!useAble)
      {
        return false;
      }
      Process process = new Process();//新建一个过程
      ProcessStartInfo startInfo = new ProcessStartInfo(rarExeFile);//新建一个启动信息
      startInfo.Arguments = cmd;//设置启动信息的执行参数
      //startInfo.WorkingDirectory = workDirectory;//设置启动信息的工作目录
      startInfo.WindowStyle = ProcessWindowStyle.Hidden;//设置程序后台运行
      process.StartInfo = startInfo;//设置过程的启动信息
      process.Start();//开始过程
      return true;
    } 

    public bool unZipAll(string zipFile, string targetDirectory)//将指定压缩文件解压到指定目录
    {
      if (! File.Exists(zipFile))
      {
        return false;
      }
      string zipCmd = "x " + zipFile +" "+ targetDirectory + " -y -ibck";//后台解压压缩文件中全部文件到指定目录
      exeRarCmd(zipCmd);//执行解压操作
      return true;
    } 

    public bool unZipToCurrentDirectory(string zipFile)//将压缩文件解压到当前目录
    {
      if (!File.Exists(zipFile))
      {
        return false;
      }
      FileInfo fileInfo = new FileInfo(zipFile);
      return unZipAll(zipFile, fileInfo.DirectoryName);
    }
  } 

Main:
public static void Main()
    {
      UseWinRar rar = new UseWinRar();
      string[] zipFiles = Directory.GetFiles(Environment.CurrentDirectory, "*.zip");//获取所有zip文件路径
      foreach (string zipFile in zipFiles)
      {
        rar.unZipToCurrentDirectory(zipFile);
      }
    }