public Person UpdatePerson(string id, Person updatePerson)
{
Person p = persons.FirstOrDefault(e => e.ID.Equals(id));
p.Name = updatePerson.Name;
p.Age = updatePerson.Age;
return p;
}
public Person CreatePerson(Person createPerson)
{
createPerson.ID = (++personCount).ToString();
persons.Add(createPerson);
return createPerson;
}