保存enum时的值不正确

我在迁移中很难获得实体框架5枚举映射到整数列。下面是代码:

[Table("UserProfile")]
public class UserProfile
{
    public enum StudentStatusType
    {
        Student = 1,
        Graduate = 2
    }
    [Key]
    public int UserId { get; set; }
    public string UserName { get; set; }
    public string FullName { get; set; }
    public StudentStatusType Status { get; set; }
}

迁移看起来像这样:

public partial class EnumTest : DbMigration
{
    public override void Up()
    {
        AddColumn("UserProfile", "Status", c => c.Int(nullable: false, defaultValue:1));
    }
    public override void Down()
    {
        DropColumn("UserProfile", "Status");
    }
}

但是，当我保存更改时，它不会在数据库中反映它们。

var user = new UserProfile();
user.Status = UserProfile.StudentStatusType.Graduate;
user.FullName = "new";
user.UserName = "new";
users.UserProfiles.Add(user);
users.SaveChanges();

----------------------------------------------------
|UserId   |   UserName   |   FullName   |   Status |
----------------------------------------------------
|1        |   new        |   new        |   1      |
----------------------------------------------------