How to treat and test flow control if not with exceptions with c#?

What's the right way to treat and test flow control on methods that are void if not with exceptions? I've seen that Microsoft do not recomend such practice so what's the right way?

This is how how I'm treating parameters that shouldn't be accepted in my method:

    public void RentOutCar(ReservationInfo reservationInfo) 
    {
        try
        {
            if (string.IsNullOrEmpty(reservationInfo.ReservationNumber) || string.IsNullOrWhiteSpace(reservationInfo.ReservationNumber))
            {
                throw new ArgumentException("Reservation Number is null or empty.");
            }
            if (reservationInfo == null)
            {
                throw new ArgumentNullException("Null Reservation info.");
            }
            if (reservationInfo.Car == null)
            {
                throw new ArgumentNullException("No car registered to rent.");
            }
            if (reservationInfo.RentalDatetime == DateTime.MinValue || reservationInfo.RentalDatetime == DateTime.MaxValue)
            {
                throw new ArgumentException("Rental Date has an unreal value.");
            }
            if (reservationInfo.Car.Mileage <0)
            {
                throw new ArgumentOutOfRangeException("Mileage can't be less than 0.");
            }

            reserverationsRegister.ReservationsDone.Add(reservationInfo);
        }
        catch (Exception) 
        {
            throw;
        }

    }