C#: How to convert a list of objects to a list of a single property of that object?

Question

Say I have:

IList<Person> people = new List<Person>();

And the person object has properties like FirstName, LastName, and Gender.

How can I convert this to a list of properties of the Person object. For example, to a list of first names.

IList<string> firstNames = ???

Answer 1

firstNames = (from p in people select p=>p.firstName).ToList();

Answer 2

List<string> firstNames = people.Select(person => person.FirstName).ToList();

And with sorting

List<string> orderedNames = people.Select(person => person.FirstName).OrderBy(name => name).ToList();

Answer 3

IList<string> firstNames = (from person in people select person.FirstName).ToList();

Or

IList<string> firstNames = people.Select(person => person.FirstName).ToList();