Function IsEmailValido(email As String) As Boolean
' Basato sul codice trovato qui:
' http://www.ferdinandocaprilli.it/it/competenze/applicazioni-web/aspnet/controllo-sintattico-di-un-indirizzo-e-mail-con-regular-expression.aspx
Dim pattern As String = "(?:[a-z0-9!#$%&'*+/=?^_'{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_'{|}~-]+)*|""(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*"")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])"
Return Text.RegularExpressions.Regex.IsMatch((email.ToString().ToLower()), pattern)
End Function
Basato sul codice trovato qui.
