public void ProcessRequest()
{
var handler1 = new ConcreteHander1();
var handler2 = new ConcreteHandler2();
handler2.SetSetSuccessor(handler1);
handler1.ProcessRequest(20);
}
/// <summary>
/// 责任链模式.
/// </summary>
private static void ChainCommand()
{
AbstractHandler handler = new ConcreteHander1();
AbstractHandler handler2 = new ConcreteHander2();
AbstractHandler handler3 = new ConcreteHander3();
//链式调用 handler1保存handler2的引用，handler2保存handler3的引用，这样就能逐级调用
handler.SetHandler(handler2);
handler2.SetHandler(handler3);
//执行
handler.Request(2);
Console.Read();
}
