Question

Everything is working fine.. I can Unzip files, from an Zip/Rar .. Archive.
The Problem is, how to Unzip a file, thats in a Directory?

To Unzip a File directly I use (SharpZipLib):

FastZip fastZip = new FastZip();
fastZip.ExtractZip(source, targetDirectory, null);

using (var fs = new FileStream(source, FileMode.Open, FileAccess.Read))
    using (var zf = new ZipFile(fs))
    {
        var ze = zf.GetEntry("toc.out");
        if (ze == null)
        {
            throw new ArgumentException("toc.out", "not found in Zip");
        }

        using (var s = zf.GetInputStream(ze))
        {
            // do something with ZipInputStream
        }
     }
}

Or with DotNetZip/ZipDotNet:

using (ZipFile zip = ZipFile.Read(source))
{
    ZipEntry e = zip["toc.out"];
    e.Extract();
}

Thats not working, cause hes searching the file in the root..
And I also wont do something like: DirectoryName/toc.out
How can I achieve this`? Isn’t there a parameter, where I can include all subfolders – for searching or something similar? 🙁

Answer 1

You can check the last part of the Name of the entry. Even if the file is in a subfolder, the Name entry would be something like “Folder/file.ext”.
An extension method to accomplish this would be like:

public static ZipEntry GetEntryExt(this ZipFile file, string fileName)
{
    foreach (ZipEntry entry in file)
    {
        if (entry.IsFile && entry.Name.EndsWith(Path.DirectorySeparatorChar + fileName))
            return entry;
    }

    return null;
}