我有一个学生实体,其外键 HouseID 引用一般表格中的 GeneralID 列。我在模型中正确定义了吗?
Student.cs
public class Student
{
public int studentID { get; set; }
public Nullable<int> houseID { get; set; }
public virtual House House { get; set; }
}
public class House
{
[Key, ForeignKey("Student"), Column("GeneralID")]
public int houseID { get; set; }
public virtual Student Student { get; set; }
}
更新 我在GEDBContext类中的OnModelCreating()包含
modelBuilder.Entity<Student>()
.HasOptional<House>(s => s.House)
.WithOptionalDependent(h => h.Student);
更新2
我已将学生和家庭课程改为:
public class House
{
[Key, Column("GeneralID")]
public int houseID { get; set; }
public virtual ICollection<Student> Students { get; set; }
}
public class Student
{
public int studentID { get; set; }
[ForeignKey("HouseID")]
public Nullable<int> houseID { get; set; }
public virtual House House { get; set; }
}