Question

如何从一个Dictionary里取得第i个key和Value

Answer 1

Dictionary不支持数字索引的。除非key是递增的数字。一般通过key去获得value.例如Dictionary<string, string> dict = new Dictionary<string, string>(); dict.Add("四川", "成都"); dict.Add("贵州", "贵阳"); dict.Add("云南", "昆明"); foreach(KeyValuePair<string,string> kv in dict){Console.WriteLine(kv.Value); } foreach (string key in dict.Keys)//遍历key Console.WriteLine(key); Dictionary<int, string> dict2 = new Dictionary<int, string>();dict2.Add(0, "北京"); dict2.Add(1, "上海"); dict2.Add(2, "天津");