public static void Main(string[] args)
{
// Client 端程式只須認識 StateContext, 不須認識 State 的父類別與實作
StateContext context = new StateContext();
for (int i = 0; i < 10; i++)
{
context.Request();
}
Console.ReadLine();
}
// 子類別須實作出特定狀態的具體行為內容
public override void Handle(StateContext context)
{
Console.WriteLine("1");
context.Current = new State2();
}