Dis que j'ai:
IList<Person> people = new List<Person>();
Et l'objet personne a des propriétés telles que Prénom, Nom et Sexe.
Comment puis-je convertir cela en une liste de propriétés de l'objet Personne. Par exemple, à une liste de prénoms.
IList<string> firstNames = ???
List<string> firstNames = people.Select(person => person.FirstName).ToList();
Et avec le tri
List<string> orderedNames = people.Select(person => person.FirstName).OrderBy(name => name).ToList();
IList<string> firstNames = (from person in people select person.FirstName).ToList();
Ou
IList<string> firstNames = people.Select(person => person.FirstName).ToList();
firstNames = (from p in people select p=>p.firstName).ToList();
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; }
}
}
using System.Collections.Generic;
using System.Linq;
IList<Person> people = new List<Person>();
IList<string> firstNames = people.Select(person => person.FirstName).ToList();