//使用Dapper查询返回Dictionary static void QueryDictionary() { Dictionary <int, int> keyValuePairs = PersonDB.QueryReturnDictionary(); Array.ForEach(keyValuePairs.ToArray(), n => Console.WriteLine($"Id:{n.Key},Age:{n.Value}")); //keyValuePairs.ToArray()的结果是KeyValuePair<int,int>[] //Dictionary可以看作是KeyValuePair类型的集合 }