更新AutoMapper現在接收映射的財產除外

Question

我有以下映射：

Mapper.CreateMap<Playlist, PlaylistDto>() 
     .ReverseMap() 
     .ForMember(playlist => playlist.Folder, 
      opt => opt.MapFrom(playlistDto => folderDao.Get(playlistDto.FolderId))); 

其中一個播放列表對象轉換爲PlaylistDto對象和背部。在我更新AutoMapper之前，它似乎工作得很好。

現在，當我打電話：

Mapper.AssertConfigurationIsValid(); 

我看到：

Unmapped members were found. Review the types and members below. 
Add a custom mapping expression, ignore, add a custom resolver, or modify the source/destination type 
===================================================== 
PlaylistDto -> Playlist (Source member list) 
Streamus.Dto.PlaylistDto -> Streamus.Domain.Playlist (Source member list) 
----------------------------------------------------- 
FolderId 

播放列表和PlaylistDto樣子：

[DataContract] 
public class PlaylistDto 
{ 
    [DataMember(Name = "id")] 
    public Guid Id { get; set; } 

    [DataMember(Name = "title")] 
    public string Title { get; set; } 

    [DataMember(Name = "folderId")] 
    public Guid FolderId { get; set; } 

    [DataMember(Name = "items")] 
    public List<PlaylistItemDto> Items { get; set; } 

    [DataMember(Name = "sequence")] 
    public int Sequence { get; set; } 

    public PlaylistDto() 
    { 
     Id = Guid.Empty; 
     Title = string.Empty; 
     Items = new List<PlaylistItemDto>(); 
    } 

    public static PlaylistDto Create(Playlist playlist) 
    { 
     PlaylistDto playlistDto = Mapper.Map<Playlist, PlaylistDto>(playlist); 
     return playlistDto; 
    } 
} 

public class Playlist : AbstractShareableDomainEntity 
{ 
    public virtual Folder Folder { get; set; } 
    // Use interfaces so NHibernate can inject with its own collection implementation. 
    public virtual ICollection<PlaylistItem> Items { get; set; } 
    public virtual int Sequence { get; set; } 

    public Playlist() 
    { 
     Id = Guid.Empty; 
     Title = string.Empty; 
     Items = new List<PlaylistItem>(); 
     Sequence = -1; 
    } 
} 

爲什麼AutoMapper無法自動導出FolderId更新後的文件夾？

注意，它仍然抱怨，即使我嘗試顯式定義映射到FolderId：

Mapper.CreateMap<Playlist, PlaylistDto>() 
     .ForMember(playlist => playlist.FolderId, 
      opt => opt.MapFrom(playlistDto => playlistDto.Folder.Id)) 
     .ReverseMap() 
     .ForMember(playlist => playlist.Folder, 
      opt => opt.MapFrom(playlistDto => folderDao.Get(playlistDto.FolderId))); 

Answer 1

答案是明確宣佈我的映射：

Mapper.CreateMap<Playlist, PlaylistDto>(); 
Mapper.CreateMap<PlaylistDto, Playlist>() 
    .ForMember(playlist => playlist.Folder,opt => opt.MapFrom(playlistDto => folderDao.Get(playlistDto.FolderId)));