.net core使用 AutoMapper

1.添加AutoMapper的引用

在Nuget包添加AutoMapper的引用以及引用 AutoMapper 对依赖注入的一个扩展  Extensions.Microsoft.DependencyInjection

或者程序包管理器控制台添加

PM> Install-Package AutoMapper

PM> install-package AutoMapper.Extensions.Microsoft.DependencyInjection

2.在Startup.cs 文件ConfigureServices添加代码

 public void ConfigureServices(IServiceCollection services)
        {
            //services.AddDbContext<DataContext>(options =>
            //options.UseSqlServer(Configuration.GetConnectionString("SqlServer")));
            services.AddMvc();
           services.AddAutoMapper();
        }

3.在项目文件添加映射配置类

 public class UserProfile: Profile
    {
        public UserProfile()
        {
          
            CreateMap<Student, NewStudent>();
            CreateMap<NewStudent, Student>();
        }
    }

4. 在需要的Controller依赖注入就可以使用了

 private readonly DataContext _context;
        private readonly IMapper _mapper;
        public StudentsController(DataContext context, IMapper mapper)
        {
            _context = context;
            _mapper = mapper;
        }

 [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Create([Bind("LastName,FirstMidName,EnrollmentDate")] NewStudent student)
        {

            if (ModelState.IsValid)
            {
                var model = _mapper.Map<Student>(student); //映射
                _context.Add(model);
                await _context.SaveChangesAsync();
                return RedirectToAction(nameof(Index));
            }
            return View(student);
        }