Click here to Skip to main content
13,089,401 members (61,746 online)
Click here to Skip to main content
Add your own
alternative version


78 bookmarked
Posted 15 Jan 2012

Zipping using System.IO.Compression

, 1 Nov 2013
Rate this:
Please Sign up or sign in to vote.
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);
      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))

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

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

  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!


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


About the Author

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.

You may also be interested in...


Comments and Discussions

SuggestionRe: Sorry. I got it working. This is due to the white space in S... Pin
ErrCode31-Oct-13 19:31
memberErrCode31-Oct-13 19:31 
GeneralRe: Sorry. I got it working. This is due to the white space in S... Pin
Tecfield1-Nov-13 1:34
memberTecfield1-Nov-13 1:34 
GeneralThere is no license mentioned here. Can one use this code in... Pin
ivanicin23-Jan-12 13:37
memberivanicin23-Jan-12 13:37 
GeneralRe: Its license is "The Code Project Open License (CPOL)". Pin
Tecfield23-Jan-12 16:55
memberTecfield23-Jan-12 16:55 
GeneralRe: it's a general library tip, you can anywy always use that in... Pin
ThatsAlok24-Jan-12 1:53
memberThatsAlok24-Jan-12 1:53 
GeneralThanks for the code, it works great and saves me from having... Pin
bunny ear tv19-Jan-12 3:35
memberbunny ear tv19-Jan-12 3:35 
GeneralOK, I stand Corrected! I do apologize to the author. Just ... Pin
rcooley16-Jan-12 5:48
memberrcooley16-Jan-12 5:48 
GeneralReason for my vote of 5 OK, I was wrong. I apologize to the ... Pin
rcooley16-Jan-12 5:46
memberrcooley16-Jan-12 5:46 
Reason for my vote of 5
OK, I was wrong. I apologize to the Author! I forgot to add the WIndowsBase.dll reference
GeneralIt is generally not a good practice to reference items off o... Pin
Andrew Rissing16-Jan-12 4:25
memberAndrew Rissing16-Jan-12 4:25 
GeneralRe: yes that's very true and been fixed :) thanks Pin
Tecfield16-Jan-12 5:24
memberTecfield16-Jan-12 5:24 
GeneralReason for my vote of 1 Dosnt Work! Pin
rcooley16-Jan-12 3:32
memberrcooley16-Jan-12 3:32 
GeneralRe: if you get it to work as I replied to your first post, pleas... Pin
Tecfield16-Jan-12 5:23
memberTecfield16-Jan-12 5:23 
GeneralIt Dosnt work! It can't Identify the "using System.IO.Pack... Pin
rcooley16-Jan-12 3:31
memberrcooley16-Jan-12 3:31 
GeneralRe: the very first line says: To use System.IO.Compression, you ... Pin
Tecfield16-Jan-12 5:22
memberTecfield16-Jan-12 5:22 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

Permalink | Advertise | Privacy | Terms of Use | Mobile
Web03 | 2.8.170813.1 | Last Updated 1 Nov 2013
Article Copyright 2012 by Tecfield
Everything else Copyright © CodeProject, 1999-2017
Layout: fixed | fluid