VBNET verifique si la cadena es solo letras
If System.Text.RegularExpressions.Regex.IsMatch(MyString, "^[A-Za-z]+$") Then
'String is only numbers
End If
Salty Joe
If System.Text.RegularExpressions.Regex.IsMatch(MyString, "^[A-Za-z]+$") Then
'String is only numbers
End If