public Wood(ref Wood wood) { this.id = wood.id; this.name = wood.name; }
public Door(int id, string name, string description, int quatity, float width, float height, float price, Wood wood) { this.id = id; this.name = name; this.description = description; this.quantity = quantity; this.width = width; this.height = height; this.price = price; this.wood = wood; }