c# - Defining Route for Composite Primary Keys in WebAPI2 -

how can define composite pks in webapi controller? have 2 entities. in 1 of them have 2 primary keys.

the entity "person" has following properties: id (pk), lname (pk), fname, age, groupid (fk).

here controller code:

// get: api/person/5 [httpget] [route("id")] [responsetype(typeof(person))] public async task<ihttpactionresult> getpersonbyid(int id, string lname) {     person person = await db.persons.findasync(new object[] {id, lname});     if (person == null)     {        return notfound();     }      return ok(person); } 

entity person:

public partial class person {   public int id { get; set; }   public string lname { get; set; }   public string fname { get; set; }   public int age { get; set; }    public int groupid { get; set; }    [foreignkey("id")]   public virtual group group { get; set; } } 

do have define lname in route dataannotation?