Tuple的用法

List<Tuple<string, string>> list = new List<Tuple<string, string>>();
            list.Add(new Tuple<string, string>("Account", "添加用户"));
           list.Add(new Tuple<string, string>("Manager", "患者管理"));

  ListToJson(list);
 private static void ListToJson(List<Tuple<string,string>> list)
        {
            string str= JsonConvert.SerializeObject(list);
            Console.WriteLine(str);
        }