public void Execute(object parameter)
{
Road road = parameter as Road;
PredicatePreviousState = road;
PredicatePostState = Reciever.AddNewRoad(road);
PrimaryEntityCommandManager.Add(new AddRoadCommand(this));
}
public void Redo()
{
PredicatePostState = Reciever.AddNewRoad(PredicatePreviousState);
}