Zip folder in C

Question

What is an example  simple code  of how to zip a folder in C      Update   I do not see namespace ICSharpCode  I downloaded ICSharpCode SharpZipLib dll but I do not know where to copy that DLL file  What do I need to do to see this namespace   And do you have link for that MSDN example for compress folder  because I read all MSDN but I couldn t find anything     OK  but I need next information   Where should I copy ICSharpCode SharpZipLib dll to see that namespace in Visual Studio

User · Answer

There is a ZipPackage class in the System.IO.Packaging namespace which is built into .NET 3, 3.5, and 4.0.

http://msdn.microsoft.com/en-us/library/system.io.packaging.zippackage.aspx

Here is an example how to use it. http://www.codeproject.com/KB/files/ZipUnZipTool.aspx?display=Print

User · Answer

ComponentPro ZIP can help you achieve that task  The following code snippet compress files and dirs in a folder  You can use wilcard mask as well   using ComponentPro Compression  using ComponentPro IO           Create a new instance  Zip zip   new Zip       Create a new zip file  zip Create  test zip     zip Add   D  Temp Abc       Add entire D  Temp Abc folder to the archive      Add all files and subdirectories from  c  test  to the archive  zip AddFiles   c  test       Add all files and subdirectories from  c  my folder  to the archive  zip AddFiles   c  my folder           Add all files and subdirectories from  c  my folder  to  22  folder within the archive  zip AddFiles   c  my folder2    22       Add all  dat files from  c  my folder  to  22  folder within the archive  zip AddFiles   c  my folder2    22      dat       Or simply use this to add all  dat files from  c  my folder  to  22  folder within the archive  zip AddFiles   c  my folder2   dat    22       Add   dat and   exe files from  c  my folder  to  22  folder within the archive  zip AddFiles   c  my folder2   dat   exe    22     TransferOptions opt   new TransferOptions       Donot add empty directories  opt CreateEmptyDirectories   false  zip AddFiles   c  abc        opt       Close the zip file  zip Close      http   www componentpro com doc zip has more examples

User · Answer

There s nothing in the BCL to do this for you  but there are two great libraries for  NET which do support the functionality    SharpZipLib DotNetZip   I ve used both and can say that the two are very complete and have well-designed APIs  so it s mainly a matter of personal preference   I m not sure whether they explicitly support adding Folders rather than just individual files to zip files  but it should be quite easy to create something that recursively iterated over a directory and its sub-directories using the DirectoryInfo and FileInfo classes

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using DotNetZip  available as nuget package    public void Zip string source  string destination        using  ZipFile zip   new ZipFile               CompressionLevel   CompressionLevel BestCompression                      var files   Directory GetFiles source                   SearchOption AllDirectories               Where f   gt  Path GetExtension f                   ToLowerInvariant        zip   ToArray             foreach  var f in files                        zip AddFile f  GetCleanFolderName source  f                       var destinationFilename   destination           if  Directory Exists destination   amp  amp   destination EndsWith   zip                          destinationFilename         new DirectoryInfo source  Name - DateTime Now yyyy-MM-dd-HH-mm-ss-ffffff  zip                      zip Save destinationFilename            private string GetCleanFolderName string source  string filepath        if  string IsNullOrWhiteSpace filepath                 return string Empty             var result   filepath Substring source Length        if  result StartsWith                      result   result Substring 1              result   result Substring 0  result Length - new FileInfo filepath  Name Length        return result      Usage   Zip   c  somefolder subfolder source     c  somefolder2 subfolder2 dest      Or  Zip   c  somefolder subfolder source     c  somefolder2 subfolder2 dest output zip

User · Answer

There s an article over on MSDN that has a sample application for zipping and unzipping files and folders purely in C   I ve been using some of the classes in that successfully for a long time  The code is released under the Microsoft Permissive License  if you need to know that sort of thing   EDIT  Thanks to Cheeso for pointing out that I m a bit behind the times  The MSDN example I pointed to is in fact using DotNetZip and is really very fully-featured these days  Based on my experience of a previous version of this I d happily recommend it   SharpZipLib is also quite a mature library and is highly rated by people  and is available under the GPL license  It really depends on your zipping needs and how you view the license terms for each of them   Rich

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In  NET 4 5 the ZipFile CreateFromDirectory startPath  zipPath   method does not cover a scenario where you wish to zip a number of files and sub-folders without having to put them within a folder  This is valid when you wish the unzip to put the files directly within the current folder   This code worked for me   public static class FileExtensions       public static IEnumerable lt FileSystemInfo gt  AllFilesAndFolders this DirectoryInfo dir                foreach  var f in dir GetFiles                yield return f          foreach  var d in dir GetDirectories                          yield return d              foreach  var o in AllFilesAndFolders d                   yield return o                     void Test         DirectoryInfo from   new DirectoryInfo   C  Test        using  FileStream zipToOpen   new FileStream   Test zip   FileMode Create                 using  ZipArchive archive   new ZipArchive zipToOpen  ZipArchiveMode Create                         foreach  FileInfo file in from AllFilesAndFolders   Where o   gt  o is FileInfo  Cast lt FileInfo gt                                   var relPath   file FullName Substring from FullName Length 1                   ZipArchiveEntry readmeEntry   archive CreateEntryFromFile file FullName  relPath                                     Folders don t need to be  created  in the zip-archive  The second parameter  entryName  in CreateEntryFromFile should be a relative path  and when unpacking the zip-file the directories of the relative paths will be detected and created

User · Answer

Where should I copy ICSharpCode SharpZipLib dll to see that namespace in Visual Studio    You need to add the dll file as a reference in your project  Right click on References in the Solution Explorer- Add Reference- Browse and then select the dll   Finally you ll need to add it as a using statement in whatever files you want to use it in

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Following code uses a third-party ZIP component from Rebex      add content of the local directory C  Data       to the root directory in the ZIP archive     ZIP archive C  archive zip doesn t have to exist   Rebex IO Compression ZipArchive Add   C  archive zip     C  Data            Or if you want to add more folders without need to open and close archive multiple times   using Rebex IO Compression          open the ZIP archive from an existing file  ZipArchive zip   new ZipArchive   C  archive zip   ArchiveOpenMode OpenOrCreate       add first folder zip Add   c  first folder      first folder        add second folder zip Add   c  second folder      second folder        close the archive  zip Close ArchiveSaveAction Auto     You can download the ZIP component here   Using a free  LGPL licensed SharpZipLib is a common alternative   Disclaimer  I work for Rebex

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This answer changes with  NET 4 5  Creating a zip file becomes incredibly easy  No third-party libraries will be required   string startPath     c  example start   string zipPath     c  example result zip   string extractPath     c  example extract    ZipFile CreateFromDirectory startPath  zipPath   ZipFile ExtractToDirectory zipPath  extractPath

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From the DotNetZip help file  http   dotnetzip codeplex com releases   using  ZipFile zip   new ZipFile         zip UseUnicodeAsNecessary  true      utf-8    zip AddDirectory   MyDocuments ProjectX       zip Comment    This zip was created at     System DateTime Now ToString  G         zip Save pathToSaveZipFile

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