static void Main(string[] args) { var helloList = new IGetHello[] { new CSharpHello() , new VBnetHello() , new FreeHello("Python") , new FreeHello("JavaScript"), }; helloList.ToList().ForEach(ShowConsole); Console.ReadLine(); }
static void ShowConsole(IGetHello sayHello) { Console.WriteLine(sayHello.GetHello()); }