/// <summary>  /// 压缩指定文件生成ZIP文件  /// </summary>  /// <param name="topDirName">顶层文件夹名称</param>  /// <param name="fileNamesToZip">待压缩文件列表</param>  /// <param name="ZipedFileName">ZIP文件</param>  /// <param name="CompressionLevel">压缩比</param>  /// <param name="password">密码</param>  /// <param name="comment">压缩文件注释文字</param>  public static void ZipFile(string topDirName,   string fileNameToZip,   string ZipedFileName,    int CompressionLevel,   string password,     string comment    ){var ls = new List<string> { fileNameToZip };ZipFile(topDirName, ls.ToArray(), ZipedFileName, CompressionLevel, password, comment);}/// <summary>  /// 压缩指定文件生成ZIP文件  /// </summary>  /// <param name="topDirName">顶层文件夹名称</param>  /// <param name="fileNamesToZip">待压缩文件列表</param>  /// <param name="ZipedFileName">ZIP文件</param>  /// <param name="CompressionLevel">压缩比</param>  /// <param name="password">密码</param>  /// <param name="comment">压缩文件注释文字</param>  public static void ZipFile(string topDirName,   string[] fileNamesToZip,   string ZipedFileName,    int CompressionLevel,    string password,     string comment    ){using (var s = new ZipOutputStream(File.Open(ZipedFileName, FileMode.Create))){if (password != null && password.Length > 0)s.Password = password;if (comment != null && comment.Length > 0)s.SetComment(comment);s.SetLevel(CompressionLevel); // 0 - means store only to 9 - means best compression  foreach (string file in fileNamesToZip){using (FileStream fs = File.OpenRead(topDirName + file)){   //打开待压缩文件  byte[] buffer = new byte[fs.Length];fs.Read(buffer, 0, buffer.Length);      //读取文件流  ZipEntry entry = new ZipEntry(file);    //新建实例   entry.DateTime = DateTime.Now;entry.Size = fs.Length;s.PutNextEntry(entry);s.Write(buffer, 0, buffer.Length);}}s.Finish();}}

 /// <summary>  /// 解压缩ZIP文件到指定文件夹  /// </summary>  /// <param name="zipfileName">ZIP文件</param>  /// <param name="UnZipDir">解压文件夹</param>  /// <param name="password">压缩文件密码</param>  public static void UnZipFile(string zipfileName, string UnZipDir, string password){using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipfileName))){if (!string.IsNullOrWhiteSpace(password))s.Password = password;try{ZipEntry theEntry;while ((theEntry = s.GetNextEntry()) != null){string directoryName = Path.GetDirectoryName(UnZipDir);string pathname = Path.GetDirectoryName(theEntry.Name);string fileName = Path.GetFileName(theEntry.Name);//生成解压目录   pathname = pathname.Replace(":", "$");//处理压缩时带有盘符的问题  directoryName = directoryName + "\\" + pathname;Directory.CreateDirectory(directoryName);if (fileName != String.Empty){//解压文件到指定的目录  using (var streamWriter = File.Create(directoryName + "\\" + 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.Flush();}}}}catch (Exception eu){throw eu;}}}