C# (CSharp) _10观察者模式 ObserverB示例

示例#1

文件： Program.cs 项目： mstmdev/Mstm.CSharp

        static void Main(string[] args)
        {
            ISubject sub = new Subject();
            ObserverA observerA = new ObserverA(sub);
            ObserverB observerB = new ObserverB(sub);
            sub.UpdateEvent += observerA.UpdateA;
            sub.UpdateEvent += observerB.UpdateB;

            sub.State = "Hello";
            sub.Notify();
            Console.ReadLine();
        }

示例#2

文件： Program.cs 项目： cnmade/Mstm.CSharp

        static void Main(string[] args)
        {
            ISubject  sub       = new Subject();
            ObserverA observerA = new ObserverA(sub);
            ObserverB observerB = new ObserverB(sub);

            sub.UpdateEvent += observerA.UpdateA;
            sub.UpdateEvent += observerB.UpdateB;

            sub.State = "Hello";
            sub.Notify();
            Console.ReadLine();
        }