namespace _11.Dictionary字典集合的学习
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建了一个字典键值对集合
            Dictionary<int, string> dic = new Dictionary<int, string>();
            dic.Add(1, "张三");
            dic.Add(2, "李四");
            dic.Add(3, "王五");    //和Hashtable键值对集合一样,Dictionary集合的键也必须是唯一的.
            dic[1] = "新来的";
            foreach (var item in dic.Keys)   //遍历字典集合的键
            {
                Console.WriteLine("{0}----{1}",item,dic[item]);  //输出键对应的值
            }

            Console.WriteLine("======================================");

            //Dictionary独有的遍历方式
            foreach (KeyValuePair<int,string> kv in dic)
            {
                Console.WriteLine("{0}----{1}",kv.Key,kv.Value);
            }

            Console.ReadKey();

        }
    }
}