AOUT.CH9.Examples.PersonValidatorStatic.IsValid C# (CSharp) Метод

        public static bool IsValid(Person p)
        {
            return false;
        }

 public bool CanPurchase(Person p)
 {
     if (!(PersonValidatorStatic.IsValid(p)))
     {
         throw new Exception("validation failed");
     }
     if (p.SSID != null &&
         p.SubscriptionType != null &&
         p.CreditOnFile > 0)
     {
         return(true);
     }
     return(false);
 }