Entity framework core 映射派生类型的抽象类

我有以下抽象类及其实现：

public abstract class TransactionResult : AuditableEntity
{
    public int Id { get; set; }
    [Required, MaxLength(25)]
    public string Status { get; set; }

    [Required, MaxLength(50)]
    public string ReferenceId { get; set; }

    public string ResultMetaData { get; set; }

    [Required, MaxLength(10)]
    public string CardType { get; set; }
    [Required, MaxLength(10)]
    public string CardDescription { get; set; }
    public int? CustomerSavedCardId { get; set; }
    public CustomerSavedCard CustomerSavedCard { get; set; }

    public int? PaymentPlanDetailId { get; set; }
    public PaymentPlanDetail PaymentPlanDetail { get; set; }

    public int? CustomerMembershipBillingId { get; set; }
    public CustomerMembershipBilling CustomerMembershipBilling { get; set; }

    public Guid? NotificationId { get; set; }
    
  
    public Notification Notification { get; set; }


    [Required, MaxLength(25)]
    public string Source { get; set; }

    public string CustomerKey { get; set; }
    public Customer Customer { get; set; }


    public int Amount { get; set; }
}

public class Approve : TransactionResult
{

}

public class Decline : TransactionResult
{
    public string Reason { get; set; }
}

我在使用自动映射器时试图找到原因

 profile.CreateMap<Entities.TransactionResult, TransactionsDto>()
                .ForMember(dest => dest.CustomerName, opt => opt.MapFrom(src => src.Customer.FirstName + " " + src.Customer.LastName))
                .ForMember(dest => dest.NotificationId, opt => opt.MapFrom(src => src.NotificationId))
                .ForMember(dest => dest.Reason, opt => opt.MapFrom(src => src.GetType() == typeof(Entities.Decline) ? ((Entities.Decline)src).Reason : null))

profile.CreateMap（）
.FormMember（dest=>dest.CustomerName，opt=>opt.MapFrom（src=>src.Customer.FirstName+“”+src.Customer.LastName））
.FormMember（dest=>dest.NotificationId，opt=>opt.MapFrom（src=>src.NotificationId））
.FormMember（dest=>dest.Reason，opt=>opt.MapFrom（src=>src.GetType（）==typeof（Entities.defect）？（（Entities.defect）src）。原因：null）

我在向事务结果中添加拒绝转换时出错

客户端投影包含对“System.RuntimeType”常量表达式的引用。这可能会导致内存泄漏；考虑将此常量赋值给局部变量，并使用查询中的变量。有关更多信息，请参阅

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自动映射支持继承

删除属性

原因

的行，并为

拒绝

创建特定配置文件，如下所示：

profile.CreateMap<Entities.Decline, TransactionsDto>()
    .IncludeBase<Entities.TransactionResult, TransactionsDto>();

profile.CreateMap（）
.IncludeBase（）；