Validation

Hi All,

Does anyone has a function that validates the fax number.Plz help me on this.Thankz in advance.

what can't be in a fax number?

please clarify.

i want to remove all characters other than the numbers

VB Code:

Function ExtractNumbers(s As String) As String
 Dim ba() As Byte,v As byte,i&
 ba = s
 For i = 0 To UBound(ba) step 2
    v = ba(i)
    If v > 47 And v < 58 Then ExtractNumbers = ExtractNumbers & Chr$(v)
 Next i
End Function