ДЗ: База данных игроков

using System;
using System.Collections.Generic;

namespace Classes
{
    class Program
    {
        static void Main(string[] args)
        {
            const string AddPlayerCommand = "1";
            const string BanPlayerCommand = "2";
            const string UnbanPlayerCommand = "3";
            const string DeletePlayerById = "4";
            const string ShowPlayersInfoCommand = "5";
            const string ExitCommand = "6";

            bool isWork = true;
            Database database = new Database();

            while (isWork)
            {
                ShowStartMenu(AddPlayerCommand, BanPlayerCommand, UnbanPlayerCommand, DeletePlayerById, ShowPlayersInfoCommand, ExitCommand);

                switch (Console.ReadLine())
                {
                    case AddPlayerCommand:
                        database.AddPlayer();
                        break;

                    case BanPlayerCommand:
                        database.BanPlayerById();
                        break;

                    case UnbanPlayerCommand:
                        database.UnbanPlayerById();
                        break;

                    case DeletePlayerById:
                        database.DeleteByID();
                        break;

                    case ShowPlayersInfoCommand:
                        database.ShowAllPlayers();
                        break;

                    case ExitCommand:
                        isWork = false;
                        break;

                    default:
                        Console.WriteLine("Неверная команда");
                        Messages.Continue();
                        break;
                }
            }

            static void ShowStartMenu(string add, string ban, string unban, string delete, string show, string exit)
            {
                Console.Clear();
                Console.WriteLine($"\nЧтобы добавить игрока введите {add}" +
                    $"\nЧтобы забанить игрока по ID введите {ban}" +
                    $"\nЧтобы разбанить игрока по ID введите {unban}" +
                    $"\nЧтобы удалить игрока по ID введите {delete}" +
                    $"\nЧтобы посмотреть всех игроков введите {show}" +
                    $"\nЧтобы выйти введите {exit}\n");
            }
        }
    }

    class Player
    {
        public Player(int uniqueID, int lvl, string name, bool isBanned)
        {
            UniqueID = uniqueID;
            Level = lvl;
            Name = name;
            IsBanned = isBanned;
        }

        public int UniqueID { get; private set; }
        public int Level { get; private set; }
        public string Name { get; private set; }
        public bool IsBanned { get; private set; }

        public void ShowInfo()
        {
            Console.WriteLine($"\nID: {UniqueID}\nИмя: {Name}\nУровень: {Level}\nЗабанен: {IsBanned}");
        }

        public void Ban()
        {
            IsBanned = true;
        }

        public void Unban()
        {
            IsBanned = false;
        }
    }

    class Database
    {
        private int _nextPlayerID = 101;

        private List<Player> _players = new List<Player>();
        private InpurNumberUtilite _inputNumber = new InpurNumberUtilite();

        public void ShowAllPlayers()
        {
            foreach (var player in _players)
            {
                player.ShowInfo();
            }

            Messages.Continue();
        }

        public void AddPlayer()
        {
            _players.Add(CreateNewPlayer());
            Messages.Continue();
        }


        public void DeleteByID()
        {
            Player playerToDelete;
            Console.WriteLine("Введите ID игрока для удаления;");

            if (TryGetPlayerByID(out playerToDelete))
            {
                _players.Remove(playerToDelete);
                Console.WriteLine("\nИгрок удален.");
            }

            Messages.Continue();
        }

        public void BanPlayerById()
        {
            Player playerToBanning;
            Console.WriteLine("Введите ID игрока для бана: ");

                if (TryGetPlayerByID(out playerToBanning))
                {
                    playerToBanning.Ban();
                    Console.WriteLine($"Игрок {playerToBanning.Name} забанен");
                }

            Messages.Continue();
        }

        public void UnbanPlayerById()
        {
            Console.WriteLine("Введите ID игрока для разбана: ");
            Player playerToUnbanning;
         
                if (TryGetPlayerByID(out playerToUnbanning))
                {
                    playerToUnbanning.Unban();
                    Console.WriteLine($"Игрок {playerToUnbanning.Name} разбанен");
                }

                Messages.Continue();           
        }

        private bool TryGetPlayerByID(out Player player)
        {
            int checkID = _inputNumber.TryReadNumber();
            bool isMatch = false;
            Player playerToReturn = null;

            foreach (var playerInBase in _players)
            {
                if (playerInBase.UniqueID == checkID)
                {
                    playerToReturn = playerInBase;
                    isMatch = true;
                }
            }

            if (isMatch == false)
            {
                Console.WriteLine($"В базе нет игрока с ID {checkID}");
            }

            player = playerToReturn;
            return isMatch;
        }

        private Player CreateNewPlayer()
        {
            Console.WriteLine("Как зовут Вашего героя?");
            string name = Console.ReadLine();

            Console.WriteLine("Какой уровень Вашего героя?");
            int level = _inputNumber.TryReadNumber();

            Player newPlayer = new Player(_nextPlayerID, level, name, false);
            _nextPlayerID++;
            return newPlayer;
        }
    }

    class InpurNumberUtilite
    {
        public int TryReadNumber()
        {
            int number = 0;
            bool isFine = false;

            while (isFine == false)
            {
                isFine = Int32.TryParse(Console.ReadLine(), out int value);

                if (isFine == false)
                {
                    Console.WriteLine("Ожидалось, что Вы введете число.");
                    Console.WriteLine("Попробуйте еще раз: ");
                }

                number = value;
            }

            return number;
        }
    }

    static class Messages
    {
        public static void Continue()
        {
            Console.WriteLine("\nНажмите любую клавишу для продолжения...");
            Console.ReadKey();
        }
    }
}