static void Main(string[] args)
{
//创建被访问的元素
ConcreteElementA ce1 = new ConcreteElementA("元素A");
ConCreteElementB ce2 = new ConCreteElementB("元素B");
//创建访问者
ConCreteVistorA c1 = new ConCreteVistorA();
ConCreteVistorB c2 = new ConCreteVistorB();
//访问 把访问者给元素 然后元素内部执行访问者访问自己的方法
ce1.Accept(c1);
ce1.Accept(c2);
ce2.Accept(c2);
Console.Read();
}
public override void VisitConcreteElementA(
ConcreteElementA concreteElementA)
{
Console.WriteLine("{0} visited by {1}",
concreteElementA.GetType().Name, this.GetType().Name);
}
public abstract void VisitConcreteElementA(ConcreteElementA concreteElementA);
public override void VisitConcreteElementA(ConcreteElementA concreteElementA)
{
Console.WriteLine("{0}被{1}访问", concreteElementA.GetType().Name, this.GetType().Name);
}
public abstract void VisitConcreteElementA(ConcreteElementA concreteElementA);
public override void VisitConcreteElementA(ConcreteElementA concreteElementA)
{
Console.WriteLine($"{concreteElementA.GetType().Name}被{this.GetType().Name}访问");
}
public override void VisitConcreteElementA(ConcreteElementA concreteElementA)
{
throw new NotImplementedException();
}