Imports System
Public Class Program
Public Shared Sub Main()
Dim s As String = "a c# vb.net"
Console.WriteLine(Convert.ToByte(s(0)))
Console.WriteLine(Convert.ToByte(s(2)))
Console.WriteLine(Convert.ToByte(s(6)))
End Sub
End Class
' run:
'
' 97
' 99
' 98
'