using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        // Using add method to add individual objects of Planet class.

        var planets = new List<Planet>();

        planets.Add(new Planet(){Id =1, Name ="Mercury"});

        planets.Add(new Planet(){Id = 2, Name = "Venus"});

        planets.Add(new Planet(){Id = 3, Name = "Earth"});

        planets.Add(new Planet(){Id =4, Name ="Mars"});

        // create a new Planet object, which contains Id and Name property. Set values for the properties one at a time—one per row.

        var jupiter = new Planet();

        jupiter.Id = 5;

        jupiter.Name = "4 line: Jupiter";

        planets.Add(jupiter);

        //Above 4 lines vs below 1 line syntax. Same result

        planets.Add(new Planet() { Id = 5, Name = "1 line: Jupiter" });

        //Print values with ForEach loop

        planets.ForEach(o => Console.WriteLine($"Planet Id = {o.Id} and Name = {o.Name}"));

    }

}

​

public class Planet

{

    public int Id { get; set; }

    public string Name { get; set; }

}