private Contestant SearchForContestant()
{
string nameOrRegistrationNumber = UserInterface.GetString("a name (first, last, or full) or registration number to search");
bool isPossibleRegistrationNumber = UserInterface.CheckWhetherNumberOrNot(nameOrRegistrationNumber);
if (isPossibleRegistrationNumber == true)
{
int possibleRegistrationNumber;
Int32.TryParse(nameOrRegistrationNumber, out possibleRegistrationNumber);
Contestant possibleContestant = FindContestantByRegistrationNumber(possibleRegistrationNumber);
if (possibleContestant == null)
{
return(null);
}
return(possibleContestant);
}
else
{
List <Contestant> possibleContestants = FindContestantByName(nameOrRegistrationNumber);
Contestant contestant = GetContestantFromList(possibleContestants);
if (contestant == null)
{
return(null);
}
return(contestant);
}
}