C#压缩或解压rar、zip文件方法实例

public static string ExistsWinRar()
{
    string result = string.Empty;

    string key = @"SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\WinRAR.exe";
    ReGIStryKey registryKey = Registry.LocalMachine.OpenSubKey(key);
    if (registryKey != null)
    {
        result = registryKey.GetValue("").ToString();
    }
    registryKey.Close();

    return result;
}

/// <summary>
/// 将格式为rar的压缩文件解压到指定的目录
/// </summary>
/// <param name="rarFileName">要解压rar文件的路径</param>
/// <param name="saveDir">解压后要保存到的目录</param>
public static void DeCompressRar(string rarFileName, string saveDir)
{
    string regKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe";
    RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(regKey);
    string winrarPath = registryKey.GetValue("").ToString();
    registryKey.Close();
    string winrarDir = System.IO.Path.GetDirectoryName(winrarPath);
    String commandOptions = string.FORMat("x {0} {1} -y", rarFileName, saveDir);

    ProcessStartInfo processStartInfo = new ProcessStartInfo();
    processStartInfo.FileName = System.IO.Path.Combine(winrarDir, "rar.exe");
    processStartInfo.Arguments = commandOptions;
    processStartInfo.WindowStyle = ProcessWindowStyle.Hidden;

    Process process = new Process();
    process.StartInfo = processStartInfo;
    process.Start();
    process.WaitForExit();
    process.Close();
}

/// <summary>
/// 将目录和文件压缩为rar格式并保存到指定的目录
/// </summary>
/// <param name="soruceDir">要压缩的文件夹目录</param>
/// <param name="rarFileName">压缩后的rar保存路径</param>
public static void CompressRar(string soruceDir, string rarFileName)
{
    string regKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\WinRAR.exe";
    RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(regKey);
    string winrarPath = registryKey.GetValue("").ToString();
    registryKey.Close();
    string winrarDir = System.IO.Path.GetDirectoryName(winrarPath);
    String commandOptions = string.Format("a {0} {1} -r", rarFileName, soruceDir);

    ProcessStartInfo processStartInfo = new ProcessStartInfo();
    processStartInfo.FileName = System.IO.Path.Combine(winrarDir, "rar.exe");
    processStartInfo.Arguments = commandOptions;
    processStartInfo.WindowStyle = ProcessWindowStyle.Hidden;
    Process process = new Process();
    process.StartInfo = processStartInfo;
    process.Start();
    process.WaitForExit();
    process.Close();
}

ZipOutputStream zipOutStream = new ZipOutputStream(File.Create("my.zip"));
CreateFileZipEntry(zipOutStream, "file1.txt", "file1.txt");
CreateFileZipEntry(zipOutStream, @"folder1\folder2\folder3\file2.txt", "file2.txt");
zipOutStream.Close();

Directory.CreateDirectory("ZipOutPut");
 ZipInputStream zipInputStream = new ZipInputStream(File.Open("my.zip", FileMode.Open));
 ZipEntry zipEntryFromZippedFile = zipInputStream.GetNextEntry();
 while (zipEntryFromZippedFile != null)
 {
     if (zipEntryFromZippedFile.IsFile)
     {
         FileInfo fInfo = new FileInfo(string.Format("ZipOutPut\\{0}", zipEntryFromZippedFile.Name));
         if (!fInfo.Directory.Exists) fInfo.Directory.Create();

         FileStream file = fInfo.Create();
         byte[] bufferFromZip = new byte[zipInputStream.Length];
         zipInputStream.Read(bufferFromZip, 0, bufferFromZip.Length);
         file.Write(bufferFromZip, 0, bufferFromZip.Length);
         file.Close();
     }
     zipEntryFromZippedFile = zipInputStream.GetNextEntry();
 }
 zipInputStream.Close();

System.IO.Compression.ZipFile.CreateFromDirectory(@"e:\test", @"e:\test\test.zip"); //压缩

System.IO.Compression.ZipFile.ExtractToDirectory(@"e:\test\test.zip", @"e:\test"); //解压

using (Stream stream = File.OpenRead(@"C:\Code\sharpcompress.rar"))
{
    var reader = ReaderFactory.Open(stream);
    while (reader.MoveToNextEntry())
    {
        if (!reader.Entry.IsDirectory)
        {
            Console.WriteLine(reader.Entry.FilePath);
            reader.WriteEntryToDirectory(@"C:\temp");
        }
    }
}

/// <summary>
/// 解压RAR和ZIP文件(需存在Winrar.exe(只要自己电脑上可以解压或压缩文件就存在Winrar.exe))
/// </summary>
/// <param name="UnPath">解压后文件保存目录</param>
/// <param name="rarPathName">待解压文件存放绝对路径（包括文件名称）</param>
/// <param name="IsCover">所解压的文件是否会覆盖已存在的文件(如果不覆盖,所解压出的文件和已存在的相同名称文件不会共同存在,只保留原已存在文件)</param>
/// <param name="PassWord">解压密码(如果不需要密码则为空)</param>
/// <returns>true(解压成功);false(解压失败)</returns>
public static bool UnRarOrZip( string UnPath, string rarPathName, bool IsCover, string PassWord)
{
     if (!Directory.Exists(UnPath))
         Directory.CreateDirectory(UnPath);
     Process Process1 = new Process();
     Process1.StartInfo.FileName = "Winrar.exe" ;
     Process1.StartInfo.CreateNoWindow = true ;
     string cmd = "" ;
     if (! string .IsNullOrEmpty(PassWord) && IsCover)
         //解压加密文件且覆盖已存在文件( -p密码 )
         cmd = string .Format( " x -p{0} -o+ {1} {2} -y" , PassWord, rarPathName, UnPath);
     else if (! string .IsNullOrEmpty(PassWord) && !IsCover)
         //解压加密文件且不覆盖已存在文件( -p密码 )
         cmd = string .Format( " x -p{0} -o- {1} {2} -y" , PassWord, rarPathName, UnPath);
     else if (IsCover)
         //覆盖命令( x -o+ 代表覆盖已存在的文件)
         cmd = string .Format( " x -o+ {0} {1} -y" , rarPathName,UnPath);
     else
         //不覆盖命令( x -o- 代表不覆盖已存在的文件)
         cmd = string .Format( " x -o- {0} {1} -y" , rarPathName, UnPath);
     //命令
     Process1.StartInfo.Arguments = cmd;
     Process1.Start();
     Process1.WaitForExit(); //无限期等待进程 winrar.exe 退出
     //Process1.ExitCode==0指正常执行，Process1.ExitCode==1则指不正常执行
     if (Process1.ExitCode == 0)
     {
         Process1.Close();
         return true ;
     }
     else
     {
         Process1.Close();
         return false ;
     }
 
}
 
/// <summary>
/// 压缩文件成RAR或ZIP文件(需存在Winrar.exe(只要自己电脑上可以解压或压缩文件就存在Winrar.exe))
/// </summary>
/// <param name="filesPath">将要压缩的文件夹或文件的绝对路径</param>
/// <param name="rarPathName">压缩后的压缩文件保存绝对路径（包括文件名称）</param>
/// <param name="IsCover">所压缩文件是否会覆盖已有的压缩文件(如果不覆盖,所压缩文件和已存在的相同名称的压缩文件不会共同存在,只保留原已存在压缩文件)</param>
/// <param name="PassWord">压缩密码(如果不需要密码则为空)</param>
/// <returns>true(压缩成功);false(压缩失败)</returns>
public static bool CondenseRarOrZip( string filesPath, string rarPathName, bool IsCover, string PassWord)
{
     string rarPath = Path.GetDirectoryName(rarPathName);
     if (!Directory.Exists(rarPath))
         Directory.CreateDirectory(rarPath);
     Process Process1 = new Process();
     Process1.StartInfo.FileName = "Winrar.exe" ;
     Process1.StartInfo.CreateNoWindow = true ;
     string cmd = "" ;
     if (! string .IsNullOrEmpty(PassWord) && IsCover)
         //压缩加密文件且覆盖已存在压缩文件( -p密码 -o+覆盖 )
         cmd = string .Format( " a -ep1 -p{0} -o+ {1} {2} -r" , PassWord, rarPathName, filesPath);
     else if (! string .IsNullOrEmpty(PassWord) && !IsCover)
         //压缩加密文件且不覆盖已存在压缩文件( -p密码 -o-不覆盖 )
         cmd = string .Format( " a -ep1 -p{0} -o- {1} {2} -r" , PassWord, rarPathName, filesPath);
     else if ( string .IsNullOrEmpty(PassWord) && IsCover)
         //压缩且覆盖已存在压缩文件( -o+覆盖 )
         cmd = string .Format( " a -ep1 -o+ {0} {1} -r" , rarPathName, filesPath);
     else
         //压缩且不覆盖已存在压缩文件( -o-不覆盖 )
         cmd = string .Format( " a -ep1 -o- {0} {1} -r" , rarPathName, filesPath);
     //命令
     Process1.StartInfo.Arguments = cmd;
     Process1.Start();
     Process1.WaitForExit(); //无限期等待进程 winrar.exe 退出
     //Process1.ExitCode==0指正常执行，Process1.ExitCode==1则指不正常执行
     if (Process1.ExitCode == 0)
     {
         Process1.Close();
         return true ;
     }
     else
     {
         Process1.Close();
         return false ;
     }
 
}