Implementation of method accepting lambda

I'm interested to understand how are implemented LabelFor, EditorFor... methods that accept lambda expressions in MVC.

Lets say I have a class Person and I want to print the name and the value of a property. How must be implemented Label() and Editor() methods?

  class Person
  {
     public int Id { get; set; }
  }

  void Label(Expression<Func<Person, int>> expression)
  {
     //...
  }

  void Editor(Expression<Func<Person, int>> expression)
  {
     //...
  }

  public void Test()
  {
     Person p = new Person
     {
        Id = 42
     };

     Label(x => x.Id );  // print "Id"
     Editor(x => x.Id); // print "42"

  }

via Chebli Mohamed