如何在 mvc5 中的 AspNetUsers 中添加外键引用

Question

Please can anyone help me! I have a Model class named: Student. Now i need to save a user with "StudentID". "StudentID" will be saved in user table as foreign key. here is my Student class

public class Student
{
    public int ID { get; set; }
    public string LastName { get; set; }
    public string FirstMidName { get; set; }
    public int? DepID { get; set; }
    public DateTime EnrollmentDate { get; set; }

    [ForeignKey("DepID")]
    public virtual Department Department { get; set; }
    public virtual ICollection<Enrollment> Enrollments { get; set; }

}

and my identity model is

public class ApplicationUser : IdentityUser
{

}

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext()
        : base("DefaultConnection")
    {

    }
    public DbSet<Student> Students { get; set; }

    public DbSet<Enrollment> Enrollments { get; set; }
    public DbSet<Course> Courses { get; set; }
    public DbSet<Department> Departments { get; set; }
    public static ApplicationDbContext Create()
    {
        return new ApplicationDbContext();
    }
}

so how can i add "studentID" into user table as foreign key.

Answer 1

In case you just want to use the StudenID as a foreign key in a different table, you can do it like this eg

 public class Employee
  {
    [Key]
    public int EmployeeID { get; set; }
    public string Name { get; set; }

    public virtual EmployeeDetail EmployeeDetail { get; set; }
  }

public class EmployeeDetail
  {
    [Key]
    [ForeignKey("Employee")]
    public int EmployeeID { get; set; }
    public string Adress { get; set; }

    public virtual Employee Employee { get; set; }
  }

In case you are talking about the actual User table created by Asp.Net Identity, then you can simply extend and customize the User table:

http://typecastexception.com/post/2014/06/22/ASPNET-Identity-20-Customizing-Users-and-Roles.aspx