c# - 自动映射器配置解决问题，尝试访问方法失败

Question

我正在尝试将域模型映射到我的MVC MVVM应用程序中的viewModels。这是我的自动映射器配置的代码

public class AutoMapperConfiguration
{
    public static void Configure()
    {
        Mapper.Initialize(x =>
        {
            x.AddProfile<BookStoreMappingProfile>();
        });
    }
}

映射配置文件:

public class BookStoreMappingProfile: Profile
{
    public static MapperConfiguration InitializeAutoMapper()
    {
        MapperConfiguration config = new MapperConfiguration(cfg =>
        {
            cfg.CreateMap<Book, BookListViewModel>();
        });

        return config;
    }
}

Global.asax

    //AutoMapper Configuration
    AutoMapperConfiguration.Configure();

我的 Controller 代码是:

    public ActionResult Index()
    {
        IEnumerable<Book> Books = _bookService.GetAllBooks().ToList();

        IEnumerable<BookListViewModel> BookListViewModel = Mapper.Map<IEnumerable<Book>, IEnumerable<BookListViewModel>>(Books);
        return View(BookListViewModel);
    }

BookListViewModel.cs

public class BookListViewModel
{
    [DisplayName("Name")]
    public string Name { get; set; }
    [DisplayName("ISBN")]
    public string ISBN { get; set; }
    [DisplayName("Price")]
    public double Price { get; set; }
    [DisplayName("Rating")]
    public double Rating { get; set; }
    [DisplayName("Publisher")]
    public string Publisher { get; set; }
}

Book.cs

public class Book
{
    public int Id { get; set; }
    public string Name { get; set; }
    public string ISBN { get; set; }
    public double Price { get; set; }
    public double Rating { get; set; }
    public string Publisher { get; set; }
    public DateTime YearPublished { get; set; }
    public string Edition { get; set; }
    public int CategoryId { get; set; }
    public virtual Category Categories { get; set;}
}

当我尝试在 Controller 中获取Index方法时，抛出此异常:

Attempt by method 'AutoMapper.MapperConfiguration.FindClosedGenericTypeMapFor(AutoMapper.TypePair, AutoMapper.TypePair)' to access method 'AutoMapper.MapperConfiguration+<>c__DisplayClass69_0.b__0(AutoMapper.ProfileMap)' failed.

这是方法访问​​异常，但我不知道如何解决该问题。有人可以让我洞悉那里发生的事情吗？

Answer 1

我也遇到同样的问题，并且正在使用.NET 4.5。

经过一番搜索，发现和发现错误之后，我发现问题出在System.ValueTuple上，因此，我降级到了Automapper 6.22(它不依赖于System.ValueTuple)，现在我可以对其进行配置，并且一切正常美好的。