using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var planets = new List<Planet>{new Planet()

        {Id = 1, Name = "Mercury"}, new Planet()

        {Id = 2, Name = "Venus"}, new Planet()

        {Id = 3, Name = "Earth"}};

        foreach (var planet in planets)

        {

            Console.WriteLine($"{planet.Id}, {planet.Name}");

        }

    }

}

​

public class Planet

{

    public int Id { get; set; }

​

    public string Name { get; set; }

}