Looping over files in subdirectories of a ZIP archive

.net, c#, zip

Solution

I have reproduced your program. When I iterate over a zip archive the way you do it, I get a list of all files in the full directory structure within the archive. So you do not need recursion, just iterate like you are doing now.

I understand your confusion since the API does not make a distinction between files and folders. Here is an extension method to help:

static class ZipArchiveEntryExtensions
{
    public static bool IsFolder(this ZipArchiveEntry entry)
    {
        return entry.FullName.EndsWith("/");
    }
}

Then you can do:

using (var archive = ZipFile.OpenRead("bla.zip"))
{
    foreach (var s in archive.Entries)
    {
        if (s.IsFolder())
        {
            // do something special
        }

    }
 }

Problem

Assume I have a zip file which contains 10 text files. It's easy to iterate over these text files using: ``` using (ZipArchive archive = ZipFile.OpenRead(zipIn)) { foreach (ZipArchiveEntry entry in archive.Entries) { Console.writeLine(entry) } } ``` However, suppose the text files are within a subdirectory: ``` zip/subdirectory/file1.txt ``` In this case the above code only outputs the subdirectory folder ('subdirectory'), as opposed to all the text files within that folder. Is there a simple way of looping over the files in the subdirectory also?

Original source