private static void Main(string[] args) { Game fifa = new FIFA(); Game pes = new PES(); Gamer player1 = new Player1(); Gamer player2 = new Player2() { Id = 1, FirstName = "Abdullah", LastName = "NUROĞLU", DateOfBirth = new DateTime(1996, 1, 6), NationalityNo = "15183075370", UserName = "******", Level = 99 }; GamerManager gamerManager = new GamerManager(new GamerCheckManager()); bool isValid = gamerManager.Add(player2); Campaign campaign = new Campaign() { Id = 1, Name = "free", Details = "teke it for free" }; CampaignManager campaignManager = new CampaignManager(); campaignManager.AddCampaign(campaign); campaignManager.UpdateCampaign(campaign, "everything for free"); }