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); 
      } 
    }