集合之HashTable

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
namespace TestConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            Hashtable ht = new Hashtable();

            ht.Add("first","One");

            ht.Add("second", "Two");

            ht.Add("third", "three");

            ht.Add("forth", "fore");

            printKeyAndValues(ht);

        }

        public static void printKeyAndValues(Hashtable ht)
        {
            foreach (string s in ht.Keys)//遍历键集合
            {
                Console.WriteLine("key : " + s);
            }

            foreach (string value in ht.Values)//遍历值集合
            {
                Console.WriteLine("value: " + value);
            }

            Console.WriteLine("---key ----value-----");

            foreach (DictionaryEntry de in ht)//遍历键值对
            {
                Console.WriteLine("{0}:{1}",de.Key,de.Value);  
            }
 
        }
    }
}