摘要:
注:闲来无事 来篇博客 1. 三张表 class Teacher { public int ID { set; get; } public int SchoolNum { set; get; } public string TeacherName { set; get; } public strin 阅读全文
摘要:
用处:当需要将两张表根据某个属性进行合并 1.两张表结构 class Person { public int CityID { set; get; } public string pName { set; get; } } class City { public int CityNum{ set; 阅读全文