using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Model { public class GameMode { public int Id { get; set; } public string Name { get => name; set { if (value == null) { throw new ArgumentException("A GameMode's name cannot be null"); } name = value; } } private string name = ""; public GameMode(int id= 0,string name = "Classique") { this.Id = id; this.Name = name; } } }