如果我有一个类的集合，如何返回所有类的单个属性的集合？

Question

Imagine I have 20 People objects.

IQueryable<Person> People;

How could I return a List of all the Peoples names using a linq query?

Answer 1

IEnumerable<String> names = People.Select(p => p.Name);

This assumes that a the property is of type String and is called Name.

edit: If you specifically want a list, you can add a ToList() call on the end:

List<String> names = People.Select(p => p.Name).ToList();

Answer 2

var names = from person in People select person.Name