C#实现文件压缩与解压功能的示例代码

压缩

private void skinButton1_Click(object sender, EventArgs e)
      {
          FilesUploadFor.ZipDirectory(foldertozip.Text,zipedfilename.Text);
          filesUploadFor.DisplaylistboxMsg("压缩完成");
      }

ZipDirectory

压缩用的是库函数

       /// <summary>
     /// 压缩文件夹
     /// </summary>
     /// <param name="folderToZip">需要压缩的文件夹</param>
     /// <param name="zipedFileName">压缩后的Zip完整文件名</param>
      public static void ZipDirectory(string folderToZip, string zipedFileName)
      {
          ZipDirectory(folderToZip, zipedFileName, string.Empty, true, string.Empty, string.Empty, true);
      }

      /// <summary>
      /// 压缩文件夹
      /// </summary>
      /// <param name="folderToZip">需要压缩的文件夹</param>
      /// <param name="zipedFileName">压缩后的Zip完整文件名（如D:\test.zip）</param>
      /// <param name="isRecurse">如果文件夹下有子文件夹，是否递归压缩</param>
      /// <param name="password">解压时需要提供的密码</param>
      /// <param name="fileRegexFilter">文件过滤正则表达式</param>
      /// <param name="directoryRegexFilter">文件夹过滤正则表达式</param>
      /// <param name="isCreateEmptyDirectories">是否压缩文件中的空文件夹</param>

      public static void ZipDirectory(string folderToZip, string zipedFileName, string password, bool isRecurse, string fileRegexFilter, string directoryRegexFilter, bool isCreateEmptyDirectories)
      {
          FastZip fastZip = new FastZip();
          fastZip.CreateEmptyDirectories = isCreateEmptyDirectories;
          fastZip.Password = password;
          fastZip.CreateZip(zipedFileName, folderToZip, isRecurse, fileRegexFilter, directoryRegexFilter);
      }

解压缩

  private void skinButton2_Click(object sender, EventArgs e)
      {
          filesUploadFor.UnZip(zipedfilename.Text,"");
           filesUploadFor.DisplaylistboxMsg("解压缩完成");
      }

UnZip

解压用的是库函数

        /// <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>  
      /// <returns>解压是否成功</returns>  
      public void UnZip(string zipFilePath, string unZipDir)
      {
          if (zipFilePath == string.Empty)
          {
              throw new Exception("压缩文件不能为空！");
          }
          if (!File.Exists(zipFilePath))
          {
              throw new FileNotFoundException("压缩文件不存在！");
          }
          //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);

          using (var 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 (!string.IsNullOrEmpty(directoryName))
                  {
                      Directory.CreateDirectory(unZipDir + directoryName);
                  }
                  if (directoryName != null && !directoryName.EndsWith("/"))
                  {
                  }
                  if (fileName != String.Empty)
                  {
                      using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
                      {

                          int size;
                          byte[] data = new byte[2048];
                          while (true)
                          {
                              size = s.Read(data, 0, data.Length);
                              if (size > 0)
                              {
                                  streamWriter.Write(data, 0, size);
                              }
                              else
                              {
                                  break;
                              }
                          }
                      }
                  }
              }
          }
      }

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