static void Main(string[] args)
{
List <ContactPerson> persons = new List <ContactPerson>()
{
new ContactPerson()
{
Name = "Learning Hard", MobileNum = "123445"
},
new ContactPerson()
{
Name = "Tony", MobileNum = "234565"
},
new ContactPerson()
{
Name = "Jock", MobileNum = "231455"
}
};
MobileOwner mobileOwner = new MobileOwner(persons);
mobileOwner.Show();
// 创建备忘录并保存备忘录对象
Caretaker caretaker = new Caretaker();
caretaker.ContactM = mobileOwner.CreateMemento();
// 更改发起人联系人列表
Console.WriteLine("----移除最后一个联系人--------");
mobileOwner.ContactPersons.RemoveAt(2);
mobileOwner.Show();
// 恢复到原始状态
Console.WriteLine("-------恢复联系人列表------");
mobileOwner.RestoreMemento(caretaker.ContactM);
mobileOwner.Show();
Console.Read();
}
static void Example()
{
var originator = new Example.Originator("Originator's initial state");
var caretaker = new Example.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();
}