C#實現的檔案壓縮和解壓縮類

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本文執行個體講述了C#實現的檔案壓縮和解壓縮類。分享給大家供大家參考。具體分析如下：

這個C#程式碼封裝含了幾個類，封裝了檔案壓縮和解壓縮常用的方法，包括直接通過代碼進行壓縮，也有調用winrar對檔案進行壓縮的

using System;using System.IO;using System.Diagnostics;using Microsoft.Win32;using ICSharpCode.SharpZipLib.Checksums;using ICSharpCode.SharpZipLib.Zip;///壓縮、解壓縮類namespace DotNet.Utilities{  public class SharpZip  {    public SharpZip()    { }    /// <summary>    /// 壓縮    /// </summary>    /// <param name="filename"> 壓縮後的檔案名稱(包含實體路徑)</param>    /// <param name="directory">待壓縮的檔案夾(包含實體路徑)</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>    /// 解壓縮    /// </summary>    /// <param name="file">待解壓檔案名稱(包含實體路徑)</param>    /// <param name="dir"> 解壓到哪個目錄中(包含實體路徑)</param>    public static bool UnpackFiles(string file, string dir)    {      try      {        if (!Directory.Exists(dir))        {          Directory.CreateDirectory(dir);        }        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(dir + directoryName);          }          if (fileName != String.Empty)          {            FileStream streamWriter = File.Create(dir + 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;              }            }            streamWriter.Close();          }        }        s.Close();        return true;      }      catch (Exception)      {        throw;      }    }  }  public class ClassZip  {    #region 私人方法    /// <summary>    /// 遞迴壓縮檔夾方法    /// </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>    /// 壓縮目錄    /// </summary>    /// <param name="FolderToZip">待壓縮的檔案夾，全路徑格式</param>    /// <param name="ZipedFile">壓縮後的檔案名稱，全路徑格式</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>    /// 壓縮檔    /// </summary>    /// <param name="FileToZip">要進行壓縮的檔案名稱</param>    /// <param name="ZipedFile">壓縮後產生的壓縮檔名</param>    private static bool ZipFile(string FileToZip, string ZipedFile, int level)    {      if (!File.Exists(FileToZip))      {        throw new System.IO.FileNotFoundException("指定要壓縮的檔案: " + 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>    /// 壓縮    /// </summary>    /// <param name="FileToZip">待壓縮的檔案目錄</param>    /// <param name="ZipedFile">產生的目標檔案</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>    /// 解壓    /// </summary>    /// <param name="FileToUpZip">待解壓的檔案</param>    /// <param name="ZipedFolder">解壓目標存放目錄</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 私人變數    String the_rar;    RegistryKey the_Reg;    Object the_Obj;    String the_Info;    ProcessStartInfo the_StartInfo;    Process the_Process;    #endregion    /// <summary>    /// 壓縮    /// </summary>    /// <param name="zipname">要解壓的檔案名稱</param>    /// <param name="zippath">要壓縮的檔案目錄</param>    /// <param name="dirpath">初始目錄</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>    /// 解壓縮    /// </summary>    /// <param name="zipname">要解壓的檔案名稱</param>    /// <param name="zippath">要解壓的檔案路徑</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);      }    }  }}

希望本文所述對大家的C#程式設計有所協助。

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C#實現的檔案壓縮和解壓縮類