EF5 one-to-many relationship

can be done with EF5?

X

has many Y

Y

has one X

(one for many relationships)

however Y

has a second X

which is not related to the firstX

Is it possible?

public class X
{
    public int Id { get; set; }
    public List<Y> Ys { get; set; }
}

public class Y
{
    public int Id { get; set; }

    public int id_X { get; set; }
    [ForeignKey("id_X")]
    public X X { get; set; }

    public int id_X2 { get; set; }
    [ForeignKey("id_X2")]
    public X X2 { get; set; }
}

      

        
        
        
      

    

does not work.

The code looked like this.

class Program
{
    static void Main(string[] args)
    {
        using (var context = new context())
        {
            var x = context.X.FirstOrDefault();
        }
    }
}

public class context : DbContext
{
    public context()
        : base(@"server=localhost\ALTAIRNOTESTI; uid=sa; pwd=13509; database=DDD")
    {

    }
    public DbSet<X> X { get; set; }
    public DbSet<Y> Y { get; set; }
}

public class X
{
    [Required, Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }

    public List<Y> Ys { get; set; }
}

public class Y
{
    [Required, Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }

    public int id_X { get; set; }
    [ForeignKey("id_X")]
    [InverseProperty("Ys")]
    public X X { get; set; }

    public int id_X2 { get; set; }
    [ForeignKey("id_X2")]
    public X X2 { get; set; }
}