c# - System.InvalidOperationException' 出现在 AutoMapper.dll 中。附加信息 : Mapper not initialized

Question

我发现 AutoMapper 使用起来非常简单。我正在为新版本而苦苦挣扎。我有两种类型:

namespace VehicleMVC.Models
{
    public class CarModel
    {
        public int id { get; set; }
        public string make { get; set; }
        public string model { get; set; }

    }
}

和:

namespace Business
{
    public class Car
    {

        private int _id;
        private string _make;
        private string _model;

        public int id
        {
            get { return _id; }
            set { _id = value; }
        }

        public string make
        {
            get { return _make; }
            set { _make = value; }
        }

        public string model
        {
            get { return _model; }
            set { _model = value; }
        }

    }  
}

我已经在 CarController 中试过了:

public CarController()
        {
            service = new Service.Service();
            //Mapper.Initialize(cfg => cfg.CreateMap<Business.Car,CarModel>());
            //Mapper.Initialize(cfg => cfg.CreateMap<List<CarModel>, List<Business.Car>>());
            var config = new MapperConfiguration(cfg =>
                {
                    cfg.CreateMap<Business.Car, CarModel>();
            }       );
            config.AssertConfigurationIsValid();

        }

private CarModel getCarModel(Business.Car BusinessCar)
        {
            CarModel CarModel = AutoMapper.Mapper.Map<CarModel>(BusinessCar);
            return CarModel;
        }

我得到的错误是:AutoMapper.dll 中发生了类型为 'System.InvalidOperationException' 的异常。附加信息:映射器未初始化。使用适当的配置调用 Initialize。 但未在用户代码中处理。怎么了？

Answer 1

一旦你创建了你的配置，你必须用它来初始化映射器:

var config = new MapperConfiguration(cfg =>
{
     cfg.CreateMap<Business.Car, CarModel>();
};

config.AssertConfigurationIsValid();
Mapper.Initialize(config);