public static class ZipFileHelper{#region 加压解压方法/// <summary>  /// 功能：压缩文件（暂时只压缩文件夹下一级目录中的文件，文件夹及其子级被忽略）  /// </summary>  /// <param name="dirPath">被压缩的文件夹夹路径</param>  /// <param name="zipFilePath">生成压缩文件的路径，为空则默认与被压缩文件夹同一级目录，名称为：文件夹名+.zip</param>  /// <param name="err">出错信息</param>  /// <returns>是否压缩成功</returns>  public static bool ZipFile(string dirPath, string zipFilePath, out string err){err = "";if (dirPath == string.Empty){err = "要压缩的文件夹不能为空！";return false;}if (!Directory.Exists(dirPath)){err = "要压缩的文件夹不存在！";return false;}//压缩文件名为空时使用文件夹名＋.zip  if (zipFilePath == string.Empty){if (dirPath.EndsWith("\\")){dirPath = dirPath.Substring(0, dirPath.Length - 1);}zipFilePath = dirPath + ".zip";}try{string[] filenames = Directory.GetFiles(dirPath);using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath))){s.SetLevel(9);byte[] buffer = new byte[4096];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){err = ex.Message;return false;}return true;}/// <summary>  /// 功能：解压zip格式的文件。  /// </summary>  /// <param name="zipFilePath">压缩文件路径</param>  /// <param name="unZipDir">解压文件存放路径,为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹</param>  /// <param name="err">出错信息</param>  /// <returns>解压是否成功</returns>  public static bool UnZipFile(string zipFilePath, string unZipDir, out string err){err = "";if (zipFilePath == string.Empty){err = "压缩文件不能为空！";return false;}if (!File.Exists(zipFilePath)){err = "压缩文件不存在！";return false;}//解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹  if (unZipDir == string.Empty)unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));if (!unZipDir.EndsWith("\\"))unZipDir += "\\";if (!Directory.Exists(unZipDir))Directory.CreateDirectory(unZipDir);try{using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath))){ZipEntry theEntry;while ((theEntry = s.GetNextEntry()) != null){string directoryName = Path.GetDirectoryName(theEntry.Name);string fileName = Path.GetFileName(theEntry.Name);if (directoryName.Length > 0){Directory.CreateDirectory(unZipDir + directoryName);}if (!directoryName.EndsWith("\\"))directoryName += "\\";if (fileName != String.Empty){using (FileStream streamWriter = File.Create(unZipDir + 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;}}}}}//while
                }}catch (Exception ex){err = ex.Message;return false;}return true;}//解压结束  #endregion}