Create Zip archive from multiple in memory files in C#

Question

Is there a way to create a Zip archive that contains multiple files, when the files are currently in memory? The files I want to save are really just text only and are stor

Answer 1

I come across this problem, using the MSDN example I created this class:

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

public class ZipSticle  
{  
    Package package;  

    public ZipSticle(Stream s)  
    {  
        package = ZipPackage.Open(s, FileMode.Create);  
    }  

    public void Add(Stream stream, string Name)  
    {  
        Uri partUriDocument = PackUriHelper.CreatePartUri(new Uri(Name, UriKind.Relative));  
        PackagePart packagePartDocument = package.CreatePart(partUriDocument, "");  

        CopyStream(stream, packagePartDocument.GetStream());  
        stream.Close();  
    }  

    private static void CopyStream(Stream source, Stream target)  
    {  
        const int bufSize = 0x1000;  
        byte[] buf = new byte[bufSize];  
        int bytesRead = 0;  
        while ((bytesRead = source.Read(buf, 0, bufSize)) > 0)  
            target.Write(buf, 0, bytesRead);  
    }  

    public void Close()  
    {  
        package.Close();  
    }  
}

You can then use it like this:

FileStream str = File.Open("MyAwesomeZip.zip", FileMode.Create);  
ZipSticle zip = new ZipSticle(str);  

zip.Add(File.OpenRead("C:/Users/C0BRA/SimpleFile.txt"), "Some directory/SimpleFile.txt");  
zip.Add(File.OpenRead("C:/Users/C0BRA/Hurp.derp"), "hurp.Derp");  

zip.Close();
str.Close();

You can pass a MemoryStream (or any Stream) to ZipSticle.Add such as:

FileStream str = File.Open("MyAwesomeZip.zip", FileMode.Create);  
ZipSticle zip = new ZipSticle(str);  

byte[] fileinmem = new byte[1000];
// Do stuff to FileInMemory
MemoryStream memstr = new MemoryStream(fileinmem);
zip.Add(memstr, "Some directory/SimpleFile.txt");

memstr.Close();
zip.Close();
str.Close();