摘要: 首先准备两个类 1 private class Person 2 { 3 public int CityID { set; get; } 4 5 public string Name { set; get; } 6 } 7 8 private class City 9 { 10 public int 阅读全文
posted @ 2021-12-03 15:23 只吃肉不喝酒 阅读(141) 评论(0) 推荐(0) 编辑