예제 #1
0
        static void Main(string[] args)
        {

            Originator o = new Originator();
            o.State = "On";

            Caretaker c = new Caretaker();
            c.Memento = o.CreateMemento();

            o.State = "Off";
            o.SetMemento(c.Memento);

            Console.ReadKey();
        }
        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.ContactMementoDic.Add(DateTime.Now.ToString(), 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();

            // 创建第二个备份
            Thread.Sleep(1000);
            caretaker.ContactMementoDic.Add(DateTime.Now.ToString(), mobileOwner.CreateMemento());

            // 恢复到原始状态
            Console.WriteLine("-------恢复联系人列表,请从以下列表选择恢复的日期------");
            var keyCollection = caretaker.ContactMementoDic.Keys;

            foreach (string k in keyCollection)
            {
                Console.WriteLine("Key = {0}", k);
            }
            while (true)
            {
                Console.Write("请输入数字,按窗口的关闭键退出:");

                int index = -1;
                try
                {
                    index = Int32.Parse(Console.ReadLine());
                }
                catch
                {
                    Console.WriteLine("输入的格式错误");
                    continue;
                }

                ContactMemento contactMentor = null;
                if (index < keyCollection.Count && caretaker.ContactMementoDic.TryGetValue(keyCollection.ElementAt(index), out contactMentor))
                {
                    mobileOwner.RestoreMemento(contactMentor);
                    mobileOwner.Show();
                }
                else
                {
                    Console.WriteLine("输入的索引大于集合长度!");
                }
            }
        }