How to find uncompressed size of ionic zip file

Question

I have a zip file compressed using Ionic zip. Before extracting I need to verify the available disk space. But how do I find the uncompressed size before hand? Is there any

Answer 1

public static long GetTotalUnzippedSize(string zipFileName)
{
    using (ZipArchive zipFile = ZipFile.OpenRead(zipFileName))
    {
        return zipFile.Entries.Sum(entry => entry.Length);
    }
}