Public Function setcnstring() As String
    cnstring = "Provider=sqloledb;Server=SERVER\ISTANZA\\INDIRIZZO IP o DYNDNS;Database=NOMEDB;Uid=USER;Pwd=PASSWORD;"
    'cnstring = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=App_Data\NOMEDB.mdb;"
    Return cnstring