Automapper缺少类型映射配置或不支持的映射？ [英] Automapper missing type map configuration or unsupported mapping?

问题描述

实体模型

public partial class Categoies
{
    public Categoies()
    {
        this.Posts = new HashSet<Posts>();
    }

    public int Id { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
    public Nullable<int> PositionId { get; set; }

    public virtual CategoryPositions CategoryPositions { get; set; }
    public virtual ICollection<Posts> Posts { get; set; }
}

查看型号

public class CategoriesViewModel
{
    public int Id { get; set; }

    [Required(ErrorMessage = "{0} alanı boş bırakılmamalıdır!")]
    [Display(Name = "Kategori Adı")]
    public string Name { get; set; }

    [Display(Name = "Kategori Açıklama")]
    public string Description { get; set; }

    [Display(Name = "Kategori Pozisyon")]
    [Required(ErrorMessage="{0} alanı boş bırakılmamalıdır!")]
    public int PositionId { get; set; }
}

CreateMap

CreateMap

Mapper.CreateMap<CategoriesViewModel, Categoies>()
            .ForMember(c => c.CategoryPositions, option => option.Ignore())
            .ForMember(c => c.Posts, option => option.Ignore());

地图

[HttpPost]
public ActionResult _EditCategory(CategoriesViewModel viewModel)
{
    using (NewsCMSEntities entity = new NewsCMSEntities())
    {
        if (ModelState.IsValid)
        {
            try
            {
                category = entity.Categoies.Find(viewModel.Id);
                AutoMapper.Mapper.Map<CategoriesViewModel, Categoies>(viewModel, category);
                //category = AutoMapper.Mapper.Map<CategoriesViewModel, Categoies>(viewModel);
                //AutoMapper.Mapper.Map(viewModel, category);
                entity.SaveChanges();

                // Veritabanı işlemleri başarılı ise yönlendirilecek sayfayı 
                // belirleyip ajax-post-success fonksiyonuna gönder.
                return Json(new { url = Url.Action("Index") });
            }
            catch (Exception ex)
            {

            }
        }

        // Veritabanı işlemleri başarısız ise modeli tekrar gönder.
        ViewBag.Positions = new SelectList(entity.CategoryPositions.ToList(), "Id", "Name");
        return PartialView(viewModel);
    }
}

和错误

缺少类型映射配置或不支持的映射。
  映射类型：
  CategoriesViewModel - > Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D
  NewsCM​​S.Areas.Admin.Models.CategoriesViewModel - > System.Data.Entity.DynamicProxies.Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D

Missing type map configuration or unsupported mapping. Mapping types: CategoriesViewModel -> Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D NewsCMS.Areas.Admin.Models.CategoriesViewModel -> System.Data.Entity.DynamicProxies.Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D

目标路径：
  Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D

Destination path: Categoies_7314E98C41152985A4218174DDDF658046BC82AB0ED9E1F0440514D79052F84D

来源值：
  NewsCM​​S.Areas.Admin.Models.CategoriesViewModel

Source value: NewsCMS.Areas.Admin.Models.CategoriesViewModel

我在想什么？我试图找到，但我不能看的问题。

What am I missing? I try to find, but I cant see problem.

更新

我在的Application_Start在Global.asax中指定

I have specified in application_start in Global.asax

protected void Application_Start()
{
    InitializeAutoMapper.Initialize();
}

InitializeClass

InitializeClass

public static class InitializeAutoMapper
{
    public static void Initialize()
    {
        CreateModelsToViewModels();
        CreateViewModelsToModels();
    }

    private static void CreateModelsToViewModels()
    {
        Mapper.CreateMap<Categoies, CategoriesViewModel>();
    }

    private static void CreateViewModelsToModels()
    {
        Mapper.CreateMap<CategoriesViewModel, Categoies>()
            .ForMember(c => c.CategoryPositions, option => option.Ignore())
            .ForMember(c => c.Posts, option => option.Ignore());
    }
}

感谢。

推荐答案

我找到了解决办法，感谢所有的答复。

I found the solution, Thanks all for reply.

category = (Categoies)AutoMapper.Mapper.Map(viewModel, category, typeof(CategoriesViewModel), typeof(Categoies));

不过，我已经不知道的原因。我不能完全理解。

But, I have already dont know the reason. I cant understand fully.

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