Regular expression using character class. : Match « Regular Expressions « VB.Net Tutorial

1. VB.Net Tutorial
2. Regular Expressions
3. Match

Imports System.Text.RegularExpressions

Module Example
   Public Sub Main()
      Dim pattern1 As String = "\bgr[ae]y\b"

      Dim input As String = "The gray wolf blended in among the grey rocks."
      For Each match As Match In Regex.Matches(input, pattern1)
         Console.WriteLine("'{0}' found at position {1}", _
                           match.Value, match.Index)
      Next      
    
   End Sub
End Module