public void Run()
{
var container = new ObjectStructure();
ConcreteElementA a = new ConcreteElementA();
a.Name = "a";
container.Attach(a);
container.Accept(new ConcreteVisitorA());
}
public override void Visit(ConcreteElementA element)
{
Console.WriteLine("b visit element a:{0}",element.Name);
}
public abstract void Visit(ConcreteElementA element);
