Car Array, Finding the cars by max and min seats available

private void FindCarButton_Click(object sender, EventArgs e)
        {
            //Initialise Cars
            Car[] cars = rental.GetAllCars();

            //Reset listbox
            CarsListBox.Items.Clear();

            int iMin = int.Parse(MinTextBox.Text);
            int iMax = int.Parse(MaxTextBox.Text);
            Car[] carsfound = rental.GetCarsByPassengers(iMax, iMin);

            for (int i = 0; i < carsfound.Length; i++)
            {
                if (carsfound[i] != null)
                        CarsListBox.Items.Add(carsfound[i].Model);
            }
        }

        //method #2 - GetCarsByMaxPassengers
        public Car[] GetCarsByPassengers(int max, int min)
        {
            Car[] cars = new Car[15];
            for (int i = 0; i < carArray.Length ; i++)
            {
                if ((carArray[i].NoPassengers >= min) && (carArray[i].NoPassengers + 1 <= max))
                {
                    cars[i] = carArray[i];
                }
            }
            return cars;
        }