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Zipping using System.IO.Compression

, 1 Nov 2013 CPOL
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This post shows how to create a zip package using System.IO.Compressio.

To use System.IO.Compression, you need to add a reference to WindowsBase.dll.

The following code snippet shows how to use some of the provided functionalities:

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Packaging;

public static class ZipHelper
{
  public static void ZipFiles(string path, IEnumerable<string> files, 
         CompressionOption compressionLevel = CompressionOption.Normal)
  {
    using (FileStream fileStream = new FileStream(path, FileMode.Create))
    {
      ZipHelper.ZipFilesToStream(fileStream, files, compressionLevel);
    }
  }

  public static byte[] ZipFilesToByteArray(IEnumerable<string> files, 
         CompressionOption compressionLevel = CompressionOption.Normal)
  {
    byte[] zipBytes = default(byte[]);
    using (MemoryStream memoryStream = new MemoryStream())
    {
      ZipHelper.ZipFilesToStream(memoryStream, files, compressionLevel);
      memoryStream.Flush();
      zipBytes = memoryStream.ToArray();
    }

    return zipBytes;
  }

  public static void Unzip(string zipPath, string baseFolder)
  {
    using (FileStream fileStream = new FileStream(zipPath, FileMode.Open))
    {
      ZipHelper.UnzipFilesFromStream(fileStream, baseFolder);
    }
  }

  public static void UnzipFromByteArray(byte[] zipData, string baseFolder)
  {
    using (MemoryStream memoryStream = new MemoryStream(zipData))
    {
      ZipHelper.UnzipFilesFromStream(memoryStream, baseFolder);
    }
  }

  private static void ZipFilesToStream(Stream destination, 
          IEnumerable<string> files, CompressionOption compressionLevel)
  {
    using (Package package = Package.Open(destination, FileMode.Create))
    {
      foreach (string path in files)
      {
        // fix for white spaces in file names (by ErrCode)
        Uri fileUri = PackUriHelper.CreatePartUri(new Uri(@"/" + 
                      Path.GetFileName(path), UriKind.Relative));
        string contentType = @"data/" + ZipHelper.GetFileExtentionName(path);

        using (Stream zipStream = 
                package.CreatePart(fileUri, contentType, compressionLevel).GetStream())
        {
          using (FileStream fileStream = new FileStream(path, FileMode.Open))
          {
            fileStream.CopyTo(zipStream);
          }
        }
      }
    }
  }

  private static void UnzipFilesFromStream(Stream source, string baseFolder)
  {
    if (!Directory.Exists(baseFolder))
    {
      Directory.CreateDirectory(baseFolder);
    }

    using (Package package = Package.Open(source, FileMode.Open))
    {
      foreach (PackagePart zipPart in package.GetParts())
      {
        // fix for white spaces in file names (by ErrCode)
        string path = Path.Combine(baseFolder, 
             Uri.UnescapeDataString(zipPart.Uri.ToString()).Substring(1));

        using (Stream zipStream = zipPart.GetStream())
        {
          using (FileStream fileStream = new FileStream(path, FileMode.Create))
          {
            zipStream.CopyTo(fileStream);
          }
        }
      }
    }
  }

  private static string GetFileExtentionName(string path)
  {
    string extention = Path.GetExtension(path);
    if (!string.IsNullOrWhiteSpace(extention) && extention.StartsWith("."))
    {
      extention = extention.Substring(1);
    }

    return extention;
  }
}

Enjoy it!

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Tecfield
Architect
United States United States
I got my BS in Software Engineering from Iran, worked there for 4.5 years mainly in industrial automation field. Then I moved to Australia. In Australia, I had a great chance to work at some big companies. Since 2009 I have been living in the States. I received my MS in Information Systems from Illinois State University. Currently, I am a Senior Software Development Engineer.

Comments and Discussions

 
Questionpackage.GetParts() issue in UnzipFilesFromStream PinmemberAyusman110-Aug-12 3:39 
AnswerRe: package.GetParts() issue in UnzipFilesFromStream PinmemberTecfield10-Aug-12 4:08 
GeneralRe: Sorry, no malice intended here, but this is a general commen... PinmemberDarren Doody26-Jan-12 16:14 
GeneralReason for my vote of 5 this is better than j . Pinmemberjavaevangelist7-Feb-12 9:39 
Reason for my vote of 5
this is better than j .
GeneralNice, but please specify .NET version required. In the titl... PinmemberDarren Doody26-Jan-12 14:00 
GeneralRe: As long as you can make a reference to <code>WindowsBase.dll... PinmemberTecfield26-Jan-12 16:05 
GeneralReason for my vote of 5 Nice example Pinmemberloctrice24-Jan-12 10:09 
GeneralVery nice. It does not handle subdirectories (at least not i... Pinmemberloctrice24-Jan-12 10:08 
GeneralReason for my vote of 5 it is nice one. works with out any t... Pinmembervenkata124-Jan-12 6:16 
GeneralThank you very much for the good article. But I tried to zip... Pinmembervenkata124-Jan-12 6:10 
GeneralRe: Sorry. I got it working. This is due to the white space in S... Pinmembervenkata124-Jan-12 6:14 
SuggestionRe: Sorry. I got it working. This is due to the white space in S... PinmemberErrCode31-Oct-13 20:31 
GeneralRe: Sorry. I got it working. This is due to the white space in S... PinmemberTecfield1-Nov-13 2:34 
GeneralThere is no license mentioned here. Can one use this code in... Pinmemberivanicin23-Jan-12 14:37 
GeneralRe: Its license is "The Code Project Open License (CPOL)". PinmemberTecfield23-Jan-12 17:55 
GeneralRe: it's a general library tip, you can anywy always use that in... PinmemberThatsAlok24-Jan-12 2:53 
GeneralThanks for the code, it works great and saves me from having... Pinmemberbunny ear tv19-Jan-12 4:35 
GeneralOK, I stand Corrected! I do apologize to the author. Just ... Pinmemberrcooley16-Jan-12 6:48 
GeneralReason for my vote of 5 OK, I was wrong. I apologize to the ... Pinmemberrcooley16-Jan-12 6:46 
GeneralIt is generally not a good practice to reference items off o... PinmemberAndrew Rissing16-Jan-12 5:25 
GeneralRe: yes that's very true and been fixed :) thanks PinmemberTecfield16-Jan-12 6:24 
GeneralReason for my vote of 1 Dosnt Work! Pinmemberrcooley16-Jan-12 4:32 
GeneralRe: if you get it to work as I replied to your first post, pleas... PinmemberTecfield16-Jan-12 6:23 
GeneralIt Dosnt work! It can't Identify the "using System.IO.Pack... Pinmemberrcooley16-Jan-12 4:31 
GeneralRe: the very first line says: To use System.IO.Compression, you ... PinmemberTecfield16-Jan-12 6:22 

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