Repeat practice

Repeat practice

public class Program
{
    static void Main()
    {
        Database database = new Database();
        database.Work();
    }
}

class Player
{
    public Player(int uniqueIdentifier, string name, int level, bool isBanned)
    {
        UniqueIdentifier = uniqueIdentifier;
        Name = name;
        Level = level;
        IsBanned = isBanned;
    }

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

    public void Ban()
    {
        IsBanned = true;
    }

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

class Database
{
    private List<Player> _players = new List<Player>();
    private int _playerId = 0;

    public void Work()
    {
        const string AddPlayerCommand = "1";
        const string BanPlayerCommand = "2";
        const string UnbanPlayerCommand = "3";
        const string DeletePlayerCommand = "4";
        const string ExitCommand = "5";

        bool isWork = true;

        while (isWork == true)
        {
            Console.WriteLine("\nMenu: \n" +
                              $" {AddPlayerCommand} - Add Player\n" +
                              $" {BanPlayerCommand} - Ban Player\n" +
                              $" {UnbanPlayerCommand} - Unban Player\n" +
                              $" {DeletePlayerCommand} - Delete Player\n" +
                              $" {ExitCommand} - Exit\n");

            Console.Write("Enter command: ");
            string userInput = Console.ReadLine();

            switch (userInput)
            {
                case AddPlayerCommand:
                    AddPlayer();
                    break;

                case BanPlayerCommand:
                    BanPlayer();
                    break;

                case UnbanPlayerCommand:
                    UnbanPlayer();
                    break;

                case DeletePlayerCommand:
                    DeletePlayer();
                    break;

                case ExitCommand:
                    isWork = false;
                    break;

                default:
                    Console.Clear();
                    continue;
            }

            ShowAllPlayers();

            Console.ReadKey();
            Console.Clear();
        }
    }

    private void AddPlayer()
    {
        string playerName = "";
        int playerLevel = 1;
        bool isBanned = false;

        Console.Write("\nEnter player name: ");
        playerName = Console.ReadLine();

        Console.Write("Enter player level: ");
        Int32.TryParse(Console.ReadLine(), out playerLevel);

        _playerId++;

        Player player = new Player(_playerId, playerName, playerLevel, isBanned);
        _players.Add(player);
    }

    private void BanPlayer()
    {
        if (TryGetPlayer(out Player player) == true)
        {
            player.Ban();
            Console.WriteLine("\nPlayer successed banned.");
        }
    }

    private void UnbanPlayer()
    {
        if (TryGetPlayer(out Player player) == true)
        {
            player.Unban();
            Console.WriteLine("\nPlayer successed disbanned.");
        }
    }

    private void DeletePlayer()
    {
        if (TryGetPlayer(out Player player) == true)
        {
            _players.Remove(player);
            Console.WriteLine("\nPlayer successed deleted.");
        }
    }

    private void ShowAllPlayers()
    {
        for (int i = 0; i < _players.Count; i++)
        {
            Console.Write($"\n[Player Info]\n" +
                              $" + ID: {_players[i].UniqueIdentifier}\n" +
                              $" + Name: {_players[i].Name}\n" +
                              $" + Level: {_players[i].Level}\n" +
                              $" + Status: ");

            if (_players[i].IsBanned == true)
            {
                Console.ForegroundColor = ConsoleColor.Red;
                Console.Write("Banned\n");
            }
            else
            {
                Console.ForegroundColor = ConsoleColor.Green;
                Console.Write("Unbanned\n");
            }

            Console.ForegroundColor = ConsoleColor.White;
        }
    }

    private bool TryGetPlayer(out Player player)
    {
        player = null;

        Console.Write("Enter ID Player: ");

        if (Int32.TryParse(Console.ReadLine(), out int playerID) == true)
        {
            for (int i = 0; i < _players.Count; i++)
            {
                if (_players[i].UniqueIdentifier == playerID)
                {
                    player = _players[i];
                    return true;
                }
            }
        }

        Console.WriteLine("\nPlayer not found.");
        return false;
    }
}