Question

我一直遇到这种类型的错误，但仅限于编辑用例。类型＆＃39; AutoMapper.AutoMapperMappingException＆＃39;的例外情况发生在AutoMapper.dll中但未在用户代码中处理附加信息：缺少类型映射配置或不支持的映射。

控制器编辑方法：

public ActionResult Edit(int? id)
{
    var o = m.TrackGetById(id.GetValueOrDefault());

    if (o == null)
    {
        return HttpNotFound();
    }
    else
    {
        var editForm = AutoMapper.Mapper.Map<TrackBase, TrackEditForm>(o);  // i get the exception HERE
        return View(editForm);
    }
}

Manager TrackEditInfo方法：

public TrackBase TrackEditInfo(TrackEditForm newItem)
{ 
    var o = ds.Tracks.Find(newItem.Id);

    if (o == null)
    {
        return null;
    }
    else
    {
        ds.Entry(o).CurrentValues.SetValues(newItem);
        ds.SaveChanges();

        return Mapper.Map<Track, TrackBase>(o);
    }
}

追踪视图模型：

public class TrackBase
{
    [Key]
    public int Id { get; set; }

    [Display(Name = "Track Name")]
    [Required, StringLength(150)]
    public string Name { get; set; }

    [Required, StringLength(150)]
    public string Clerk { get; set; }

    [StringLength(150)]
    [Display(Name = "Composer Names")]
    public string Composers { get; set; }

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

    public IEnumerable<int> AlbumIds { get; set; }
}

public class TrackAdd : TrackBase
{
    public HttpPostedFileBase ClipUpload { get; set; }
}

public class TrackAddForm : TrackBase
{
    public SelectList GenreList { get; set; }
    [Required]
    [Display(Name = "Clip Upload")]
    [DataType(DataType.Upload)]
    public string ClipUpload { get; set; }
}

public class TrackWithDetail : TrackBase
{
    public TrackWithDetail()
    {
        Albums = new List<AlbumBase>();
    }

    [Display(Name = "Album Name")]
    public ICollection<AlbumBase> Albums { get; set; }

    public string AlbumName()
    {
        var album = this.Albums.FirstOrDefault();
        if (album == null)
        {
            return "-";
        }
        return album.Name;
    }

    [Display(Name = "Sample Clip")]
    public string ClipUrl
    {
        get
        {
            return $"/clip/{Id}";
        }
    }
}

public class TrackClip
{
    public int Id { get; set; }
    public string ClipContentType { get; set; }
    public byte[] Clip { get; set; }
}

public class TrackEditForm
{
    public TrackEditForm() { }

    [Key]
    public int Id { get; set; }

    [Display(Name = "Track Name")]
    [Required, StringLength(150)]
    public string Name { get; set; }

    [StringLength(150)]
    [Display(Name = "Composer Names")]
    public string Composers { get; set; }
}

AutoMapper：

   cfg.CreateMap<Models.RegisterViewModel, Models.RegisterViewModelForm>();
      // Tracks
            cfg.CreateMap<Models.Track, Controllers.TrackBase>();              
            cfg.CreateMap<Models.Track, Controllers.TrackWithDetail>();
            cfg.CreateMap<Models.Track, Controllers.TrackClip>();
            cfg.CreateMap<Controllers.TrackAdd, Models.Track>();
            cfg.CreateMap<Controllers.TrackAddForm, Models.Track>(); //ok
          cfg.CreateMap<Controllers.TrackBase, Controllers.TrackEditForm>();
        });

缺少类型映射配置或不支持的映射

0 个答案: