public void PrintContestantInfo(Contestant contestant)
 {
     Console.WriteLine("Sweepstakes winner's first name is " + contestant.FirstName);
     Console.WriteLine("Winner's last name is " + contestant.LastName);
     Console.WriteLine("Winner's email address is " + contestant.EmailAddress);
 }
 public void RegisterContestant(Contestant contestant)
 {
     contestant.RegistrationNumber = ContestantData.Count + 1;
     ContestantData.Add(contestant.RegistrationNumber, contestant);
 }