DesignPattern_Behavioral_Memento

void Main()
{
    Product product = new Product{Name="A"};
    Director director = new Director();
    director.Memento=product.Save();
    product.Load(director.Memento);
}

class Product{
    public string Name { get; set; }
    public Memento Save(){
        return new Memento{Name=Name};
    }
    public void Load(Memento m){
        Name=m.Name;
    }
}
class Memento{
    public string Name { get; set; }
}
class Director{
    public Memento Memento { get; set; }
}