using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Commandline
{
    class User
    {
        List<User> users = new List<User>
        {
            new User()
            {
                Username = "Username",
                Password = "Password"
            }
        };

        public string Username { get; set; }
        public string Password { get; set; }

        public bool Login(string username, string password)
        {
            var user = users.Find(u => u.Username == username);

            // If we find a user.
            if (user != null)
            {
                if (user.Password == password)
                {
                    return true;
                }
            }

            return false;
        }
    }
}