C# Linq2db AssociationAttribute实现返回一个错误

我一直在尝试使用Linq2db LoadWith extension方法获取相关数据。我的目的是使用LoadWith扩展方法获取用户的帖子

它返回一个这样的错误

LinqToDB.Linq.LinqException:“表达式'Param_0.CreatedBy'不是字段。”但Post实体类有一个名为CreatedBy的属性

这是我的AppUser类

 public class AppUser : BaseEntity, IAppUser
{
    [Required, Identity]
    [Key]
    public new int Id { get; set; }

    [Required]
    [ForeignKey("UserDetail")]
    public int DetailId { get; set; }

    [LinqToDBAssociation.Association(ThisKey = nameof(DetailId), OtherKey = nameof(AppUserDetail.Id), CanBeNull = true, Relationship = Relationship.OneToOne)]
    public virtual AppUserDetail UserDetail { get; set; }

    public string UserName { get; set; }
    public string NormalizedUserName { get; set; }
    public string PasswordHash { get; set; }
    public bool EmailConfirmed { get; set; }
    public string Email { get; set; }
    public string NormalizedEmail { get; set; }
    public DateTimeOffset? LockoutEnd { get; set; }
    public int AccessFailedCount { get; set; }
    public bool LockoutEnabled { get; set; }
    public string PhoneNumber { get; set; }
    public bool PhoneNumberConfirmed { get; set; }
    public string SecurityStamp { get; set; }
    public bool TwoFactorEnabled { get; set; }
    public string ConcurrencyStamp { get; set; }

    [LinqToDBAssociation.Association(ThisKey = nameof(Id), OtherKey = nameof(Post.CreatedBy), CanBeNull = true)]
    public virtual IEnumerable<Post> UserPosts { get; set; }
}

此LoadWith扩展方法返回该错误

 var appUser = _appUserRepository.Table.LoadWith(p => p.UserPosts).FirstOrDefault(x => x.UserName == userName);

如果你想看这个项目，你可以在这里查看

我怎么办

---

致以最诚挚的问候

我想您需要向属性添加

[LinqToDB.Mapping.Column]

属性，或者为整个实体设置

[Table（IsColumnAttributeRequired=false）]

---

我遇到了相同的异常，并在库存储库中找到了解决方案。

我想您需要为整个实体添加

[LinqToDB.Mapping.Column]

属性或设置

[Table（IsColumnAttributeRequired=false）]

我遇到了同样的异常，并在库存储库中找到了解决方案

    public class BaseEntity : IEntity
{
    public int Id { get; set; }

    [ForeignKey("CreatedUser")]  //By using CreatedUser integration, an owner of post,postComment,postLike that has been created, can be found easily thanks to it.
    public virtual int? CreatedBy { get; set; }

    public DateTime CreatedDate { get; set; }

    [ForeignKey("ModifiedUser")]  //ModifiedUser can be used in AdminUI.
    public int? ModifiedBy { get; set; }

    public DateTime? ModifiedDate { get; set; }
    public int? StatusId { get; set; } //This can be Enumerations.

    public BaseEntity()
    {
        CreatedDate = DateTime.Now;
    }

    public virtual AppUser CreatedUser { get; set; }
    public virtual AppUser ModifiedUser { get; set; }
}

 var appUser = _appUserRepository.Table.LoadWith(p => p.UserPosts).FirstOrDefault(x => x.UserName == userName);