private void CarObj2_button_Click(object sender, EventArgs e)
{
car = new Car();
car.Event += new MementoEvent(PatternsTestForm_EventHandler);
car.SetName("Peugeot");
car.SetColor("Black");
car.SetSpeed(20);
}
private void CarObj1_button_Click(object sender, EventArgs e)
{
car = new Car();
car.Event += new MementoEvent(PatternsTestForm_EventHandler);
car.SetName("Toyota");
car.SetColor("Green");
car.SetSpeed(10);
command.MakeBackup(car);
}