public FillupView(Fillup Single)
        {
            ItemBackground = null;
            ID = Single.ID;

            Miles = "-";

            Date = Format.Date(Single.Date);
            Gallons = Format.Gallons(Single.Volume);
            Cost = Format.Currency(Single.Cost);
        }
        public FillupView(Fillup Item, Fillup Previous)
        {
            ItemBackground = null;
            ID = Item.ID;

            double mileage = Item.Odometer - Previous.Odometer;

            Date = Format.Date(Item.Date);

            Gallons = Format.Gallons(Item.Volume);
            Miles = Format.Miles(mileage);
            Cost = Format.Currency(Item.Cost);

            if (Settings.PreferGPM)
                Efficiency = Format.GPM(mileage, Item.Volume);
            else
                Efficiency = Format.MPG(mileage, Item.Volume);
        }