private void init() { TaxCard card = TaxCardFactory.CreateTaxCard(); string str = card.get_Corporation(); string str2 = card.get_Address(); string str3 = card.get_Telephone(); string str4 = card.get_BankAccount(); SetAttribute method = new SetAttribute(this.OnSetAttribute); List <string> list = new List <string> { str, str2, str3, str4 }; base.BeginInvoke(method, new object[] { list }); }