实体框架多对多

第一种型号

[Table("Blotter.DealingDesk")]
public partial class DealingDesk
{
    public DealingDesk()
    {
        DealingStatus = new HashSet<DealingStatus>();
    }
    public int DealingDeskId { get; set; }
    [Required]
    [StringLength(50)]
    public string Country { get; set; }
    [Required]
    [StringLength(50)]
    public string DealingDeskCode { get; set; }
    public virtual ICollection<DealingStatus> DealingStatus { get; set; }
}

第二型号

[Table("Blotter.EmailAddress")]
public partial class EmailAddress
{
    public EmailAddress()
    {
        LUDealingDeskEmails = new HashSet<LUDealingDeskEmail>();
    }
    [Key]
    public int EmailId { get; set; }
    [Required]
    [StringLength(150)]
    public string Email { get; set; }

 public virtual ICollection<LUDealingDeskEmail> LUDealingDeskEmails { get; set; }
 }

第三种型号（查找表为POCO）

[Table("Blotter.LUDealingDeskEmail")]
public partial class LUDealingDeskEmail
{
    public int LUDealingDeskEmailId { get; set; }
    public int FK_EmailId { get; set; }
    public int FK_DealingDeskId { get; set; }
    public virtual DealingDesk DealingDesk { get; set; }
    public virtual EmailAddress EmailAddress { get; set; }
}

public partial class MCUtilityContext : DbContext
{
    public MCUtilityContext()
        : base("name=MCUtilityContext")
    { 
        Database.SetInitializer<CapstoneInterfaceContext>(null);
        Configuration.ProxyCreationEnabled = true;
        Configuration.LazyLoadingEnabled = true;
    }
    public virtual DbSet<DealingDesk> DealingDesks { get; set; }
    public virtual DbSet<DealingStatus> DealingStatus { get; set; }
    public virtual DbSet<EmailAddress> EmailAddresses { get; set; }
    public virtual DbSet<LUDealingDeskEmail> LUDealingDeskEmails { get; set; }
    public virtual DbSet<ApplicationError> ApplicationErrors { get; set; }
    public virtual DbSet<Connection> Connections { get; set; }
    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Entity<DealingDesk>()
            .HasKey(k => k.DealingDeskId);
        modelBuilder.Entity<DealingStatus>()
            .HasKey(k => k.DealingStatusId)
            .HasRequired(e => e.DealingDesk)
            .WithMany( s => s.DealingStatus)
            .HasForeignKey( s => s.DealingDeskId)
            .WillCascadeOnDelete(false);

        //modelBuilder.Entity<DealingDesk>()
        //    .HasMany(a => a.EmailAddress)
        //    .WithMany(b => b.)
        //    .Map(m =>
        //    {
        //        m.MapLeftKey("DealingDeskId");
        //        m.MapRightKey("EmailId");
        //        m.ToTable("LUDealingDeskEmail", "Blotter");
        //    });
            //modelBuilder.Entity<DealingDesk>()
            //     .HasMany<EmailAddress>(s => s.EmailAddress)
            //     .WithMany(c => c.DealingDesk)
            //     .Map(cs =>
            //     {
            //         cs.MapLeftKey("FK_DealingDeskId");
            //         cs.MapRightKey("FK_EmailId");
            //         cs.ToTable("Blotter.LUDealingDeskEmail");
            //     });
    }

问题是，当我检索交易台对象时，我没有收到电子邮件，它会返回一个错误：

'（System.Data.Entity.DynamicProxies.DealingDesk_B97FADE5FCA3BA8DED564B236CAB94E3462E9228525392A5055AE860F8156F86）新System.Collections.Generic.Mscorlib_CollectionDebugView（dealingDesk）.Items[1]）.EmailAddress'引发了类型为的异常"System.Data.Entity.Core.EntityCommandExecutionException"

也许我看错了？

class ForeignKeyObject
{
    public int Id{get;set;}
}
class Entity
{
    public int Id{get;set;}
    public ForeignKeyObj KeyObj{get;set;}
}

var entities = (from e in _db.Entities
                                 where e.Id== 1
                                 select e).ToList();
foreach( var e in entities )
      Debug.WriteLine(e.KeyObj.Id.ToString());