隐藏基类成员

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace suoyinzhishiqi
{
    public class B
    {
        public void outstring()
        {
            Console.WriteLine("This is the base class!");
        }
    }
    public class A : B
    {
 
    }
    public class C : B
    {
        new public void outstring()//利用new隐藏基类成员
        {
            Console.WriteLine("deriverd cass C");
        }
    }
    class OvrIndexer
    {
        
        static void Main(string[] args)
        {
            A a = new A();
            C c = new C();
            B b = new B();
            a.outstring();
            b.outstring();
            c.outstring();
        }
    } 
}