IptcPackage

public IptcRecordSet IptcPackage { get; set; }

using (Metadata metadata = new Metadata(Constants.JpegWithIptc))
{
    var root = metadata.GetRootPackage<JpegRootPackage>();
    if (root.IptcPackage != null)
    {
        if (root.IptcPackage.EnvelopeRecord != null)
        {
            Console.WriteLine(root.IptcPackage.EnvelopeRecord.DateSent);
            Console.WriteLine(root.IptcPackage.EnvelopeRecord.Destination);
            Console.WriteLine(root.IptcPackage.EnvelopeRecord.FileFormat);
            Console.WriteLine(root.IptcPackage.EnvelopeRecord.FileFormatVersion);

            // ...
        }

        if (root.IptcPackage.ApplicationRecord != null)
        {
            Console.WriteLine(root.IptcPackage.ApplicationRecord.Headline);
            Console.WriteLine(root.IptcPackage.ApplicationRecord.ByLine);
            Console.WriteLine(root.IptcPackage.ApplicationRecord.ByLineTitle);
            Console.WriteLine(root.IptcPackage.ApplicationRecord.CaptionAbstract);
            Console.WriteLine(root.IptcPackage.ApplicationRecord.City);
            Console.WriteLine(root.IptcPackage.ApplicationRecord.DateCreated);
            Console.WriteLine(root.IptcPackage.ApplicationRecord.ReleaseDate);

            // ...
        }
    }
}