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Zipping using System.IO.Compression

, 1 Nov 2012 CPOL
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This post shows how to create a zip package using System.IO.Compression
This is an old version of the currently published tip/trick.
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)
            {
                Uri fileUri = 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())
            {
                string path = Path.Combine(baseFolder, 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.

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Comments and Discussions


Discussions posted for the Published version of this article. Posting a message here will take you to the publicly available article in order to continue your conversation in public.
 
QuestionSystem.IO.FileNotFoundException: Could not find file 'C:\Windows\system32\[file to zip] Pin
mtoha15-Feb-16 19:43
membermtoha15-Feb-16 19:43 
QuestionHow about folders Pin
pishkari24-Sep-14 0:35
memberpishkari24-Sep-14 0:35 
GeneralArticle with demo of compression. Pin
DaveAuld1-Nov-13 6:56
protectorDaveAuld1-Nov-13 6:56 
GeneralRe: Article with demo of compression. Pin
Tecfield1-Nov-13 7:59
memberTecfield1-Nov-13 7:59 
GeneralMy vote of 3 Pin
BillWoodruff15-Jul-13 18:25
memberBillWoodruff15-Jul-13 18:25 
GeneralRe: My vote of 3 Pin
Tecfield16-Jul-13 3:09
memberTecfield16-Jul-13 3:09 
GeneralRe: My vote of 3 Pin
BillWoodruff24-Jul-13 23:34
memberBillWoodruff24-Jul-13 23:34 
GeneralRe: My vote of 3 Pin
Tecfield25-Jul-13 3:03
memberTecfield25-Jul-13 3:03 
GeneralMy vote of 5 Pin
Abey Thomas2-Nov-12 20:44
memberAbey Thomas2-Nov-12 20:44 
QuestionCopy Stream Pin
Paul @ The Computer Station31-Oct-12 12:39
groupPaul @ The Computer Station31-Oct-12 12:39 

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