string sql = "SELECT * FROM [Foglio1$] WHERE [tiporecord]=@tipo And ( [nome]='" + nome + "' And [cognome]='" + cognome + "' And [residenzacomune]='" + citta + "' And [residenzacap]='" + cap + "' ) And [AlboElenco]='" + alboElenco + "' ORDER BY [cognome] ASC";