.NET 4.x Как поставить пароль для открытия файла или папки? - Visual Basic .NET

'Add a few files to a zip file, using WinZip-compatible AES encryption on the entries:
 
Try 
  Using zip As New ZipFile
    zip.Password = "The.Silvertones.Box.Set!"
    zip.Encryption = EncryptionAlgorithm.WinZipAes256
    zip.AddFile("c:\datafiles\RawData-2008-12-20.csv", "")
    zip.AddFile("c:\photos\personal\7440-N49th.png", "images")
    zip.AddFile("c:\Desktop\2005_Annual_Report.pdf", "files\documents")
    zip.Save("AES-Encrypted-Secret.zip")
  End Using
Catch ex1 As System.Exception
  System.Console.Error.WriteLine("exception: {0}", ex1)
End Try