C＃：如何将对象的列表转换为该对象的单个属性的列表？

说我有：

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

而person对象具有诸如FirstName，LastName和Gender之类的属性。

如何将其转换为Person对象的属性列表。 例如，到一个名字列表。

 IList<string> firstNames = ??? 

Answer 1

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

并与sorting

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

Answer 2

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

要么

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

Answer 3

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

Answer 4

 using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace TestProject { public partial class WebForm3 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { SampleDataContext context = new SampleDataContext(); List<Employee> l = new List<Employee>(); var qry = from a in context.tbl_employees where a.Gender=="Female" orderby a.Salary ascending select new Employee() { ID=a.Id, Fname=a.FName, Lname=a.Lname, Gender=a.Gender, Salary=a.Salary, DepartmentId=a.DeparmentId }; l= qry.ToList(); var e1 = from emp in context.tbl_employees where emp.Gender == "Male" orderby emp.Salary descending select emp; GridView1.DataSource = l; GridView1.DataBind(); } } public class Employee { public Int64 ID { get; set; } public String Fname { get; set; } public String Lname { get; set; } public String Gender { get; set; } public decimal? Salary { get; set; } public int? DepartmentId { get; set; } } }