static void Main(string[] args)
{
// Client code.
Originator originator = new Originator("Super-duper-super-puper-super.");
Caretaker caretaker = new Caretaker(originator);
caretaker.Backup();
originator.DoSomething();
caretaker.Backup();
originator.DoSomething();
caretaker.Backup();
originator.DoSomething();
Console.WriteLine();
caretaker.ShowHistory();
Console.WriteLine("\nClient: Now, let's rollback!\n");
caretaker.Undo();
Console.WriteLine("\n\nClient: Once more!\n");
caretaker.Undo();
Console.WriteLine();
}
public static void Mein()
{
var originator = new Originator("Hello world!");
var caretaker = new Caretaker(originator);
caretaker.Backup();
originator.DoSomething();
caretaker.Backup();
originator.DoSomething();
caretaker.Backup();
originator.DoSomething();
Console.WriteLine();
caretaker.ShowHistory();
// Undo the changes.
caretaker.Undo();
caretaker.ShowHistory();
caretaker.Undo();
caretaker.Undo();
}
