Need to dynamically package some files into a .zip to create a SCORM package, anyone know how this can be done using code? Is it possible to build the folder structure dynam
DotNetZip is nice for this.
You can write the zip directly to the Response.OutputStream. The code looks like this:
Response.Clear();
Response.BufferOutput = false; // for large files...
System.Web.HttpContext c= System.Web.HttpContext.Current;
String ReadmeText= "Hello!\n\nThis is a README..." + DateTime.Now.ToString("G");
string archiveName= String.Format("archive-{0}.zip",
DateTime.Now.ToString("yyyy-MMM-dd-HHmmss"));
Response.ContentType = "application/zip";
Response.AddHeader("content-disposition", "filename=" + archiveName);
using (ZipFile zip = new ZipFile())
{
// filesToInclude is an IEnumerable<String>, like String[] or List<String>
zip.AddFiles(filesToInclude, "files");
// Add a file from a string
zip.AddEntry("Readme.txt", "", ReadmeText);
zip.Save(Response.OutputStream);
}
// Response.End(); // no! See http://stackoverflow.com/questions/1087777
Response.Close();
DotNetZip is free.
You could take a look at SharpZipLib. And here's a sample.
You don't have to use an external library anymore. System.IO.Packaging has classes that can be used to drop content into a zip file. Its not simple, however. Here's a blog post with an example (its at the end; dig for it).
The link isn't stable, so here's the example Jon provided in the post.
using System;
using System.IO;
using System.IO.Packaging;
namespace ZipSample
{
class Program
{
static void Main(string[] args)
{
AddFileToZip("Output.zip", @"C:\Windows\Notepad.exe");
AddFileToZip("Output.zip", @"C:\Windows\System32\Calc.exe");
}
private const long BUFFER_SIZE = 4096;
private static void AddFileToZip(string zipFilename, string fileToAdd)
{
using (Package zip = System.IO.Packaging.Package.Open(zipFilename, FileMode.OpenOrCreate))
{
string destFilename = ".\\" + Path.GetFileName(fileToAdd);
Uri uri = PackUriHelper.CreatePartUri(new Uri(destFilename, UriKind.Relative));
if (zip.PartExists(uri))
{
zip.DeletePart(uri);
}
PackagePart part = zip.CreatePart(uri, "",CompressionOption.Normal);
using (FileStream fileStream = new FileStream(fileToAdd, FileMode.Open, FileAccess.Read))
{
using (Stream dest = part.GetStream())
{
CopyStream(fileStream, dest);
}
}
}
}
private static void CopyStream(System.IO.FileStream inputStream, System.IO.Stream outputStream)
{
long bufferSize = inputStream.Length < BUFFER_SIZE ? inputStream.Length : BUFFER_SIZE;
byte[] buffer = new byte[bufferSize];
int bytesRead = 0;
long bytesWritten = 0;
while ((bytesRead = inputStream.Read(buffer, 0, buffer.Length)) != 0)
{
outputStream.Write(buffer, 0, bytesRead);
bytesWritten += bytesRead;
}
}
}
}