static void Main(string[] args) { ////Struture for memento pattern //Originator origiator = new Originator(); //origiator.State = "ON"; //CareTaker careTaker = new CareTaker(); //careTaker.Memento = origiator.CreateMemento(); //origiator.State = "OFF"; //origiator.SetMemento(careTaker.Memento); List <ContactPerson> contactPersons = new List <ContactPerson>() { new ContactPerson() { Name = "Learning Hard", MobileNum = "123445" }, new ContactPerson() { Name = "Tony", MobileNum = "234565" }, new ContactPerson() { Name = "Jock", MobileNum = "231455" } }; MobileOwner owner = new MobileOwner(contactPersons); owner.ShowContacts(); CareTaker careTaker = new CareTaker(); careTaker.ContactMementos.Add(DateTime.Now.ToString(), owner.CreateMemento()); //Remove some contacts; owner.ContactPersons.RemoveAt(2); owner.ShowContacts(); Thread.Sleep(1000); careTaker.ContactMementos.Add(DateTime.Now.ToString(), owner.CreateMemento()); Console.WriteLine("Restore Date Index:"); var keyCollections = careTaker.ContactMementos.Keys; foreach (var key in keyCollections) { Console.WriteLine(key); } while (true) { int index = -1; try { index = Int32.Parse(Console.ReadLine()); } catch { Console.WriteLine("The format is wrong"); continue; } ContactMemento contactMentor = null; if (index < keyCollections.Count && careTaker.ContactMementos.TryGetValue(keyCollections.ElementAt(index), out contactMentor)) { owner.RestoreMemento(contactMentor); owner.ShowContacts(); } else { Console.WriteLine(""); } } Console.Read(); }
public void MementoTesting() { 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); } int index = 0; while (index < 2) { Console.Write("请输入数字,按窗口的关闭键退出:"); try { index++; //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!"); } } }
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.ContactPersonDictionary.Add(DateTime.Now.ToString(), mobileOwner.CreateContactMemento()); // 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(); Thread.Sleep(1000); caretaker.ContactPersonDictionary.Add(DateTime.Now.ToString(), mobileOwner.CreateContactMemento()); int count = caretaker.ContactPersonDictionary.Count; for (int i = 0; i < count; i++) { Console.WriteLine("{0} {1}", i + 1, caretaker.ContactPersonDictionary.Keys.ElementAt(i)); } 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 < count) { contactMentor = caretaker.ContactPersonDictionary.Values.ElementAt(index); mobileOwner.RestoreMemento(contactMentor); mobileOwner.Show(); } else { Console.WriteLine("输入的索引大于集合长度!"); } } Console.Read(); }