bless

using System;
using System.Collections.Generic;
using System.Dynamic;

namespace PlayerDataBase
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Player> players = new List<Player>();
            AddPlayer(1, "1", 1, false, players);
            Player.BanPlayer(players, 1);
            Player.UnbanPlayer(players, 1);
            RemovePlayer(1, players);
        }

        static void AddPlayer(int playerNum, string nickname, int level, bool restriction, List<Player> players)
        {
            Player newPlayer = new Player(playerNum, nickname, level, restriction);
            players.Add(newPlayer);
        }

        static void RemovePlayer(int playerNumber, List<Player> players)
        {
            players.RemoveAt(playerNumber - 1);
        }

        class Player
        {
            public string Nickname { get; private set; }
            public int PlayerNum { get; private set; }
            public bool Restriction { get; private set; }
            public int Level { get; private set; }

            public Player(int playerNum, string nickname, int level, bool restriction)
            {
                PlayerNum = playerNum;
                Nickname = nickname;
                Level = level;
                Restriction = restriction;
            }

            static public void BanPlayer(List<Player> players, int playerNumber)
            {
                players[playerNumber - 1].Restriction = true;
            }

            static public void UnbanPlayer(List<Player> players, int playerNumber)
            {
                players[playerNumber - 1].Restriction = false;
            }
        }
    }
}