I can't imagine this is hard to do, but I haven't been able to get it to work. I have a files class that just stores the location, directory, and name of the files I want to zip. The files I'm zipping exist on disk so the FileLocation is the full path. ZipFileDirectory doesn't exist on disk. If I have two items in my files list,
{ FileLocation = "path/file1.doc", ZipFileDirectory = @"\", FileName = "CustomName1.doc" },
{ FileLocation = "path/file2.doc", ZipFileDirectory = @"\NewDirectory", FileName = "CustomName2.doc" }
I would expect to see MyCustomName1.doc in the root, and a folder named NewDirectory containing MyCustomName2.doc, but what happens is they both end up in the root using this code:
using (var zip = new Ionic.Zip.ZipFile())
{
foreach (var file in files)
{
zip.AddFile(file.FileLocation, file.ZipFileDirectory).FileName = file.FileName;
}
zip.Save(HttpContext.Current.Response.OutputStream);
}
If I use this:
zip.AddFiles(files.Select(o => o.FileLocation), false, "NewDirectory");
Then it creates the new directory and puts all of the files inside, as expected, but then I lose the ability to use the custom naming with this method, and it also introduces more complexities that the first method would handle perfectly.
Is there a way I can get the first method (AddFile()) to work as I expect?
On further inspection, since posting a comment a few minutes ago, I suspect that setting FileName
is erasing the archive path.
Testing confirms this.
Setting the name to @"NewDirectory\\CustomName2.doc" will fix the problem.
You can also use @"\\NewDirectory\\CustomName2.doc"
Not sure if this exactly suites your needs but thought I would share. It is a method that is part of a helper class that I created to make working with DotNetZip a bit easier for my dev team. The IOHelper class is another simple helper class that you can ignore.
/// <summary>
/// Create a zip file adding all of the specified files.
/// The files are added at the specified directory path in the zip file.
/// </summary>
/// <remarks>
/// If the zip file exists then the file will be added to it.
/// If the file already exists in the zip file an exception will be thrown.
/// </remarks>
/// <param name="filePaths">A collection of paths to files to be added to the zip.</param>
/// <param name="zipFilePath">The fully-qualified path of the zip file to be created.</param>
/// <param name="directoryPathInZip">The directory within the zip file where the file will be placed.
/// Ex. specifying "files\\docs" will add the file(s) to the files\docs directory in the zip file.</param>
/// <param name="deleteExisting">Delete the zip file if it already exists.</param>
public void CreateZipFile(ICollection<FileInfo> filePaths, string zipFilePath, string directoryPathInZip, bool deleteExisting)
{
if (deleteExisting)
{
IOHelper ioHelper = new IOHelper();
ioHelper.DeleteFile(zipFilePath);
}
using (ZipFile zip = new ZipFile(zipFilePath))
{
foreach (FileInfo filePath in filePaths)
{
zip.AddFile(filePath.FullName, directoryPathInZip);
}
zip.Save();
}
}
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