.net里面的字典Dictionary

            Dictionary<int, string> d = new Dictionary<int, string>();
            d.Add(1, "wjl");
            d.Add(2, "zhangsan");
            d.Add(3, "hyf");
            //Dictionary里面可以添加不同键相同值
            d.Add(4, "hyf");
            //检测集合里面是否包含一个键
            if (!d.ContainsKey(4))
            {
                d.Add(5, "ljm");
            }
            else {
                d[5] = "王狗蛋儿";
            }
            //遍历字典的两种方式
            foreach (int key  in d.Keys) {
                Console.WriteLine("键：{0}   值：{1}", key,d[key]);
            }
            Console.WriteLine("********************************");
            foreach (KeyValuePair<int,string> kv in d)
            {
                Console.WriteLine("键：{0}   值：{1}", kv.Key, kv.Value);
            }