Imports System.Text.RegularExpressions
Imports System
Public Class MainClass
Shared Sub Main()
If Not Regex.Match("Address", "^[0-9]+\s+([a-zA-Z]" & _
"+|[a-zA-Z]+\s[a-zA-Z]+)$").Success Then
' address was incorrect
Console.WriteLine("Invalid Address")
End If
End Sub ' Main
End Class