C# 实现压缩 + 解压缩

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using System; using System.IO; using System.Diagnostics; using Microsoft.Win32; using ICSharpCode.SharpZipLib.Checksums; using ICSharpCode.SharpZipLib.Zip;   namespace AutoUpdate.Helper {     public class SharpZip     {         public SharpZip()         { }           /// <summary>         /// 压缩         /// </summary>         /// <param name="filename"> 压缩后的文件名(包含物理路径)</param>         /// <param name="directory">待压缩的文件夹(包含物理路径)</param>         public static void PackFiles(string filename, string directory)         {             try             {                 FastZip fz = new FastZip();                 fz.CreateEmptyDirectories = true;                 fz.CreateZip(filename, directory, true, "");                 fz = null;             }             catch (Exception)             {                 throw;             }         }           /// <summary>         /// 解压缩         /// </summary>         /// <param name="file">待解压文件名(包含物理路径)</param>         /// <param name="targetdir"> 解压到哪个目录中(包含物理路径)</param>         public static bool UnpackFiles(string file, string targetdir)         {             try             {                 if (!Directory.Exists(targetdir))                 {                     Directory.CreateDirectory(targetdir);                 }                 ZipInputStream s = new ZipInputStream(File.OpenRead(file));                 ZipEntry theEntry;                 while ((theEntry = s.GetNextEntry()) != null)                 {                     string directoryName = Path.GetDirectoryName(theEntry.Name);                     string fileName = Path.GetFileName(theEntry.Name);                     if (directoryName != String.Empty)                     {                         //Directory.CreateDirectory(targetdir + directoryName);                         Directory.CreateDirectory(targetdir + "\\" + directoryName);                     }                     if (fileName != String.Empty)                     {                         //FileStream streamWriter = File.Create(targetdir + "\\" + theEntry.Name);                         FileStream streamWriter = File.Create(theEntry.Name);                         //FileStream streamWriter = File.Create(targetdir);                         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.Close();                     }                 }                 s.Close();                 return true;             }             catch (Exception)             {                 throw;             }         }     }       public class ClassZip     {         #region 私有方法         /// <summary>         /// 递归压缩文件夹方法         /// </summary>         private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)         {             bool res = true;             string[] folders, filenames;             ZipEntry entry = null;             FileStream fs = null;             Crc32 crc = new Crc32();             try             {                 entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/"));                 s.PutNextEntry(entry);                 s.Flush();                 filenames = Directory.GetFiles(FolderToZip);                 foreach (string file in filenames)                 {                     fs = File.OpenRead(file);                     byte[] buffer = new byte[fs.Length];                     fs.Read(buffer, 0, buffer.Length);                     entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));                     entry.DateTime = DateTime.Now;                     entry.Size = fs.Length;                     fs.Close();                     crc.Reset();                     crc.Update(buffer);                     entry.Crc = crc.Value;                     s.PutNextEntry(entry);                     s.Write(buffer, 0, buffer.Length);                 }             }             catch             {                 res = false;             }             finally             {                 if (fs != null)                 {                     fs.Close();                     fs = null;                 }                 if (entry != null)                 {                     entry = null;                 }                 GC.Collect();                 GC.Collect(1);             }             folders = Directory.GetDirectories(FolderToZip);             foreach (string folder in folders)             {                 if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))                 {                     return false;                 }             }             return res;         }           /// <summary>         /// 压缩目录         /// </summary>         /// <param name="FolderToZip">待压缩的文件夹，全路径格式</param>         /// <param name="ZipedFile">压缩后的文件名，全路径格式</param>         private static bool ZipFileDictory(string FolderToZip, string ZipedFile, int level)         {             bool res;             if (!Directory.Exists(FolderToZip))             {                 return false;             }             ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));             s.SetLevel(level);             res = ZipFileDictory(FolderToZip, s, "");             s.Finish();             s.Close();             return res;         }           /// <summary>         /// 压缩文件         /// </summary>         /// <param name="FileToZip">要进行压缩的文件名</param>         /// <param name="ZipedFile">压缩后生成的压缩文件名</param>         private static bool ZipFile(string FileToZip, string ZipedFile, int level)         {             if (!File.Exists(FileToZip))             {                 throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");             }             FileStream ZipFile = null;             ZipOutputStream ZipStream = null;             ZipEntry ZipEntry = null;             bool res = true;             try             {                 ZipFile = File.OpenRead(FileToZip);                 byte[] buffer = new byte[ZipFile.Length];                 ZipFile.Read(buffer, 0, buffer.Length);                 ZipFile.Close();                   ZipFile = File.Create(ZipedFile);                 ZipStream = new ZipOutputStream(ZipFile);                 ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));                 ZipStream.PutNextEntry(ZipEntry);                 ZipStream.SetLevel(level);                   ZipStream.Write(buffer, 0, buffer.Length);             }             catch             {                 res = false;             }             finally             {                 if (ZipEntry != null)                 {                     ZipEntry = null;                 }                 if (ZipStream != null)                 {                     ZipStream.Finish();                     ZipStream.Close();                 }                 if (ZipFile != null)                 {                     ZipFile.Close();                     ZipFile = null;                 }                 GC.Collect();                 GC.Collect(1);             }             return res;         }         #endregion           /// <summary>         /// 压缩         /// </summary>         /// <param name="FileToZip">待压缩的文件目录</param>         /// <param name="ZipedFile">生成的目标文件</param>         /// <param name="level">6</param>         public static bool Zip(String FileToZip, String ZipedFile, int level)         {             if (Directory.Exists(FileToZip))             {                 return ZipFileDictory(FileToZip, ZipedFile, level);             }             else if (File.Exists(FileToZip))             {                 return ZipFile(FileToZip, ZipedFile, level);             }             else             {                 return false;             }         }           /// <summary>         /// 解压         /// </summary>         /// <param name="FileToUpZip">待解压的文件</param>         /// <param name="ZipedFolder">解压目标存放目录</param>         public static void UnZip(string FileToUpZip, string ZipedFolder)         {             if (!File.Exists(FileToUpZip))             {                 return;             }             if (!Directory.Exists(ZipedFolder))             {                 Directory.CreateDirectory(ZipedFolder);             }             ZipInputStream s = null;             ZipEntry theEntry = null;             string fileName;             FileStream streamWriter = null;             try             {                 s = new ZipInputStream(File.OpenRead(FileToUpZip));                 while ((theEntry = s.GetNextEntry()) != null)                 {                     if (theEntry.Name != String.Empty)                     {                         fileName = Path.Combine(ZipedFolder, theEntry.Name);                         if (fileName.EndsWith("/") || fileName.EndsWith("\\"))                         {                             Directory.CreateDirectory(fileName);                             continue;                         }                         streamWriter = File.Create(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;                             }                         }                     }                 }             }             finally             {                 if (streamWriter != null)                 {                     streamWriter.Close();                     streamWriter = null;                 }                 if (theEntry != null)                 {                     theEntry = null;                 }                 if (s != null)                 {                     s.Close();                     s = null;                 }                 GC.Collect();                 GC.Collect(1);             }         }     }       public class ZipHelper     {         #region 私有变量         String the_rar;         RegistryKey the_Reg;         Object the_Obj;         String the_Info;         ProcessStartInfo the_StartInfo;         Process the_Process;         #endregion           /// <summary>         /// 压缩         /// </summary>         /// <param name="zipname">要解压的文件名</param>         /// <param name="zippath">要压缩的文件目录</param>         /// <param name="dirpath">初始目录</param>         public void EnZip(string zipname, string zippath, string dirpath)         {             try             {                 the_Reg = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\Shell\Open\Command");                 the_Obj = the_Reg.GetValue("");                 the_rar = the_Obj.ToString();                 the_Reg.Close();                 the_rar = the_rar.Substring(1, the_rar.Length - 7);                 the_Info = " a    " + zipname + "  " + zippath;                 the_StartInfo = new ProcessStartInfo();                 the_StartInfo.FileName = the_rar;                 the_StartInfo.Arguments = the_Info;                 the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;                 the_StartInfo.WorkingDirectory = dirpath;                 the_Process = new Process();                 the_Process.StartInfo = the_StartInfo;                 the_Process.Start();             }             catch (Exception ex)             {                 throw new Exception(ex.Message);             }         }           /// <summary>         /// 解压缩         /// </summary>         /// <param name="zipname">要解压的文件名</param>         /// <param name="zippath">要解压的文件路径</param>         public void DeZip(string zipname, string zippath)         {             try             {                 the_Reg = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRar.exe\Shell\Open\Command");                 the_Obj = the_Reg.GetValue("");                 the_rar = the_Obj.ToString();                 the_Reg.Close();                 the_rar = the_rar.Substring(1, the_rar.Length - 7);                 the_Info = " X " + zipname + " " + zippath;                 the_StartInfo = new ProcessStartInfo();                 the_StartInfo.FileName = the_rar;                 the_StartInfo.Arguments = the_Info;                 the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden;                 the_Process = new Process();                 the_Process.StartInfo = the_StartInfo;                 the_Process.Start();             }             catch (Exception ex)             {                 throw new Exception(ex.Message);             }         }     }   }