1 public class Student
 2 {
 3      public int Id;
 4       public Teacher teacher;    
 5 }    
 6 
 7 public class Teacher
 8 {
 9      public string Name;
10 }

 1 //
 2 List<Student> list=从某处得来的数据，比如数据库
 3 
 4 // datagridview.DataSource=list  ;    此句改为如下
 5 
 6 var list2=list.Select(s=>new {s.Id,    teacher_name=s.teacher.Name});    //转为匿名
 7 
 8    datagridview.DataSource=list2.ToList();
 9    
10