using System.Collections.Generic;

using System;

​

namespace OOP_Static_Properties

{

    public class User

    {

        public static int NumberOfUsers { get; private set; } = 0; // class property

        public string Name { get; } // instance property

        public User(string userName) // constructor

        {

            Name = userName;

            NumberOfUsers++; // Set is private so that only inside the class we can make changes to the property

        }

    }

    static class Program

    {

        public static void Main()

        {

            List<User> users = new()

            {

                new User("James"),

                new User("Andrew")

            };

​

            users.ForEach(user => Console.WriteLine(user.Name));

            Console.WriteLine($"The number of users is {User.NumberOfUsers}");

            users.Add(new User("Jeremy"));

            users.ForEach(user => Console.WriteLine(user.Name));

            Console.WriteLine($"The number of users is now {User.NumberOfUsers}");

            Console.ReadKey();

        }

    }

}