如何将对象列表自动映射到ASP网络中的相同对象列表？

Question

我正在尝试从OrderResource自动映射到我的订单。我的OrderResource

public class OrderResource
{

    public string OrderId { get; set; }
    public UserResource User { get; set; }
    public double TotalOrder { get; set; }
    public IEnumerable<OrderItemResource> OrderItems { get; set; }
    public OrderResource()
    {
        OrderItems = new List<OrderItemResource>();
    }
}

OrderItemResource：

public class OrderItemResource
{

    public string ProductName { get; set; }
    public double Price { get; set; }
    public int Quantity { get; set; }
    public OrderResource Order { get; set; }
    public string OrderId { get; set; }
}

我的订单模型。这就是我想将包含项目的OrderResource映射到：

[Table("Orders")]
public class Order
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }
    public string Mail { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Address { get; set; }
    public double Cost { get; set; }
    public IEnumerable<OrderItem> Items { get; set; }
    public Order()
    {
        Items = new List<OrderItem>();
    }
}

和我的OrderItem模型：

[Table("OrderItems")]
public class OrderItem
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }
    public string Name { get; set; }
    public double Price { get; set; }
    public int Quantity { get; set; }
    [ForeignKey("OrderId")]
    public Order Order { get; set; }
    public int OrderId { get; set; }
}

在映射用户等方面我没有任何麻烦。它们都可以工作，但是我不知道如何映射OrderItems。这是令我失望的最后一行：

CreateMap<OrderResource, Services.Order.Models.Order>()
            .ForMember(o => o.Id, opt => opt.Ignore())
            .ForMember(o => o.Mail, opt => opt.MapFrom(or => or.OrderId))
            .ForMember(o => o.FirstName, opt => opt.MapFrom(or => or.User.firstName))
            .ForMember(o => o.LastName, opt => opt.MapFrom(or => or.User.lastName))
            .ForMember(o => o.Address, opt => opt.MapFrom(or => or.User.adress))
            .ForMember(o => o.Items, opt => opt.MapFrom(or => or.OrderItems));

确切的错误出现在这里：

            Services.Order.Models.Order realOrder = Mapper.Map<OrderResource, Services.Order.Models.Order>(Order);

错误是AutoMapperMappingException：缺少类型映射配置或不支持的映射。

更新：

我现在添加了：

CreateMap<OrderItemResource, OrderItem>()
            .ForMember(oir => oir.Name, opt => opt.MapFrom(oi => oi.ProductName))
            .ForMember(oir => oir.Price, opt => opt.MapFrom(oi => oi.Price))
            .ForMember(oir => oir.Quantity, opt => opt.MapFrom(oi => oi.Quantity));

我怎么称呼它？ 我的控制器中有这个

            Services.Order.Models.Order realOrder = Mapper.Map<OrderResource, Services.Order.Models.Order>(Order);

，但是它在自动映射时仍然不使用orderitem数组。