//Tao ra List cac do uong co Type mong muon public void getListDrinkWithManyType(ManageList <Drink> list, ManageList <Drink> chooseDrink, ManageList <string> Type) { chooseDrink.Clear(); for (int i = 0; i < list.Count; i++) { if (Type.Contains(list[i].Type)) { chooseDrink.Add(list[i]); } } }