AutoMapper（ASP.NET MVC）

需求：需要将Employee转换成DTO

    public class Employee
    {
        public int Age { get; set; }
        public int EmployeeNum { get; set; }
        public string Name { get; set; }
        public string Sex { get; set; }
        public string Email { get; set; }

    }

    public class EmployeeDTO
    {
        public int ID { get; set; }
        public string Name { get; set; }
        public string Email { get; set; }
    }

上面两个类是基础，下面需要去做映射。

    public class EmployeeProfile : Profile
    {
        public EmployeeProfile()
        {
            //CreateMap<Employee, EmployeeDTO>(); 如果 Employee 和 DTO中所要映射的属性是一样的，就可以这样写。

            //将Employee类中的EmployeeNum 转换成 DTO中的ID
            CreateMap<Employee, EmployeeDTO>().ForMember(dest => dest.ID, opt => opt.MapFrom(src => src.EmployeeNum));//有多个的话，可以链式去写
        }
    }

映射好了之后，需要在Application_Start方法中去初始化AutoMapper。

        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            RouteConfig.RegisterRoutes(RouteTable.Routes);

            Mapper.Initialize(cfg =>
            {
                cfg.AddProfile(new EmployeeProfile());
            });
        }

做好映射之后就可以直接使用了。

        public ActionResult Index()
        {
            List<Employee> employees = new List<Employee>() { new Employee { Age = 18, Sex = "男", Email = "vichin@qisda.com", Name = "vichin", EmployeeNum = 1707107 } };
            IList<EmployeeDTO> viewModel = Mapper.Map<IList<Employee>, IList<EmployeeDTO>>(employees);
            return View();
        }

下面是结果：