Dictionary遍历方法

            Dictionary<string, int> list = new Dictionary<string, int>();

            list.Add("d", 1);            

            foreach (var item in list)
            {
                Console.WriteLine(item.Key + item.Value);
            }

            //KeyValuePair<T,K>
            foreach (KeyValuePair<string, int> kv in list)
            {
                Console.WriteLine(kv.Key + kv.Value);
            }

            //通过键的集合取

            foreach (string key in list.Keys)
            {
                Console.WriteLine(key + list[key]);
            }

            //直接取值

            foreach (int val in list.Values)
            {
                Console.WriteLine(val);
            }

            //非要采用for的方法也可

            List<string> test = new List<string>(list.Keys);

            for (int i = 0; i < list.Count; i++)

            {
                Console.WriteLine(test[i] + list[test[i]]);
            }