using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;

namespace Third
{
    class Program
    {
        static void Main(string[] args)
        {
            Hashtable has = new Hashtable();
            Car car1 = new Car("大黄蜂");
            Car car2 = new Car("007");
            Car car3 = new Car("兰博基尼");
            //Add方法
            has.Add(1,car1);
            has.Add(2,car2);
            has.Add(3,car3);
            Console.WriteLine("集合中共有{0}个元素",has.Count);


以下是我写的：运行不出来正确结果
            for (int i = 0; i < has.Values.Count; i++)
            {
                Car car = has.Values as Car;
                Console.WriteLine(car);
            }

        }
    }
}

var keys = has.Keys;
foreach (var key in keys)
{
    Car car = has[key];
    Console.WriteLine(car);
}

foreach(DictonaryEntry d in has)
{
  Console.WriteLine(d.value);
}
新手意见，希望能帮到你