Question

How can I make a property in a class return a certain string if its a certain condition eg/empty

public class Person
{
  public string Name{get;set;}
  publc string MiddleName{get;set;}
  public string Surname{get;set;}
  public string Gender{get;set;}
}

List<Person> people = repo.GetPeople();
List<Person> formatted = people.GroupBy(x=>x.Gender).//?? format Gender to be a certain string eg/"Not Defined" if blank 

Answer 1

people.GroupBy(x=>x.Gender ?? "Not Available").ToList();

Update: (to catch empty strings)

people.GroupBy(x=> String.IsNullOrWhiteSpace(x.Gender) ? "None" : x.Gender).ToList();