Private Shared Function CaesarCypher(ByVal value As String, ByVal shift As Integer) As String
Dim buffer As Char() = value.ToCharArray()
Dim letter As Char = buffer(i)
If Char.IsLetter(letter) Then
Dim isLower As Boolean = Char.IsLower(letter)
letter = ChrW((letter + shift))
letter = (char) (letter - 26)
ElseIf letter And lt Then
letter = (char) (letter + 26)
letter = (char)(letter - 26)
ElseIf letter And lt Then
letter = (char)(letter + 26)
Return New String(buffer)
Dim secretMessage As String = _