示例#1
0
        public void DoWork()
        {
            // 將類別實體化
            Cat cat = new Cat("小花");

            cat.Shout(5);
            cat.ShoutNumber = 3;
            cat.AnimalShout();

            Dog dog = new Dog("小白");

            // 泛型(Generic)
            List <Animal> animals = new List <Animal>();

            animals.Add(cat);
            animals.Add(dog);

            foreach (var animal in animals)
            {
                animal.ShowAnimalShout();
            }

            List <IChange> animalChanges = new List <IChange>();

            animalChanges.Add(new Doraemon());
            animalChanges.Add(new SunWukong());
            foreach (var animalChange in animalChanges)
            {
                Console.WriteLine(animalChange.ChangeThing("各種東西"));
            }

            Mouse mouse1 = new Mouse("小小");
            Mouse mouse2 = new Mouse("小二");
            Mouse mouse3 = new Mouse("小三");

            // 把 mouse1.Run 這個方法 登記(增加)到 CatShout() 事件當中
            // c# 1.0 寫法
            cat.CatShout += new Cat.CatShoutEventHandler(mouse1.Run);
            cat.CatShout += new Cat.CatShoutEventHandler(mouse2.Run);
            // 這裡移除一個 CatShout()
            cat.CatShout -= new Cat.CatShoutEventHandler(mouse2.Run);

            // c# 2.0 寫法
            Cat.CatShoutEventHandler d2 = mouse3.Run;
            cat.CatShout  += d2;
            cat.CatShout  += delegate() { Console.WriteLine("2.0"); };
            cat.CatShout2 += mouse3.Run2;
            cat.CatShout3 += mouse3.Run3;
            cat.CatShout3 += delegate(string n) { Console.WriteLine($"{n} - 2.0 - v2"); return(false); };

            // c# 3.0 寫法
            Cat.CatShoutEventHandler d3 = () => { Console.WriteLine("3.0"); };
            cat.CatShout  += d3;
            cat.CatShout  += () => { Console.WriteLine("3.0 - v2"); };
            cat.CatShout3 += n => { Console.WriteLine($"{n} - 3.0 - v2"); return(false); };

            cat.Shout();
        }