我想使用AutoMapper将EfCore多对多实体映射到一对多对象。

我的课程：

Public Class App
{
        public Guid Id { get; set; }

        [Required]
        public string Name { get; set; }

        [Required]
        public string Summary { get; set; }

        public ICollection<AppCollection> AppCollections { get; set; }
}

public class Collection
    {
        public Guid Id { get; set; }

        public string Name { get; set; }

        public ICollection<App> Apps { get; set; }

        public ICollection<AppCollection> AppCollections { get; set; }
    }

public class AppCollection
    {
        public Guid Id { get; set; }

        public Guid AppId { get; set; }

        public App App { get; set; }

        public Guid CollectionId { get; set; }

        public Collection Collection { get; set; }
    }

Public Class AppResponse
{
        public Guid Id { get; set; }

        public string Name { get; set; }

        public string Summary { get; set; }

        public ICollection<CollectionResponse> AppCollections { get; set; }
}

public class CollectionResponse
    {
        public Guid Id { get; set; }

        public string Name { get; set; }
    }

App类是我的数据库实体对象，而AppResponse是我的api响应类。我也不想在mapper中创建新对象。 我已经尝试了以下映射器配置，但无法正常工作。它会忽略Collection对象。

CreateMap<App,AppResponse>()
                .ForMember(x => x.IconUrl,c => c.MapFrom(s => s.IconLink))
                .ForMember(m => m.AppCollections,c => c.MapFrom(s => s.AppCollections.Select(x => x.Collection).ToList()));