private bool IsUnderAge(Customer customer)
{
try
{
// calculate customer's age in years and months
// parse customer date of birth
var calDateOfBirth = DateTime.Parse(customer.GetDateOfBirth());
// get current date
var calNow = DateTime.Now;
// calculate age different in years and months
int ageYr = (calNow.Year - calDateOfBirth.Year);
int ageMo = (calNow.Month - calDateOfBirth.Month);
// decrement age in years if month difference is negative
if (ageMo < 0)
{
ageYr--;
}
int age = ageYr;
// determine if customer is under legal age for rating
switch (rating)
{
case Rating.Twelve:
return age < 12;
case Rating.Fifteen:
return age < 15;
case Rating.Eighteen:
return age < 18;
default:
return false;
}
}
catch (FormatException e)
{
Console.Write(e.StackTrace);
}
return false;
}
public void RentFor(Customer customer)
{
if (IsUnderAge(customer))
throw new CustomerUnderageException();
customer.AddRental(this);
}