public void ArchiveByteArray()
 {
     byte[] myByteArray = Enumerable.Repeat((byte)0x78, 10000).ToArray();
     using (Stream myZippedStream = new FileStream("Documents\\ArchiveByteArray.zip", FileMode.Create)) {
         using (ZipArchive archive = new ZipArchive()) {
             archive.AddByteArray("myByteArray", myByteArray);
             archive.Save(myZippedStream);
         }
     }
 }