//首先是两个entity
public class Teacher{
public int ID{ get; set; }
public string TeacherName{ get; set; }
}
public class Student{
public int ID{ get; set; }
public string StudentName{ get; set; }
public int TeacherID{ get; set; }
[ForeignKey("TeacherID")]
public Teacher Teacher{ get; set; }
}
//再写两个dto
public class teacherDto{
public int ID{ get; set; }
public string TeacherName{ get; set; }
}
public class studentDto{
public int ID{ get; set; }
public string StudentName{ get; set; }
public int TeacherID{ get; set; }
public string TeacherName{ get; set; }
}
//再就是映射
public StudentProfile()
{
CreateMap<Student, StudentDto>()
.ForMember(x => x.TeacherName,
opt => opt.MapFrom(x => x.Teacher.TeacherName))
;
CreateMap<StudentDto, Student>();
}
//最后查询
//_coreDbContext是数据库上下文,代码就不放出来了
var query = _coreDbContext.Student.First();
最后查询的Dto返回的数据,Dto中其他数据都能出来,但是TeacherName出不来,我这个问题是出在哪儿