如何在ASP.NET内核中设置Automapper

Question

我在.NET相对来说是新手，我决定解决.NET核心问题，而不是学习“旧方法”。我在这里找到了一篇关于为.NET核心设置AutoMapper的详细文章，但是对于新手来说，还有更简单的演练吗？

Answer 1

我想通了！以下是细节：

>

通过nuget将主AutoMapper包添加到解决方案中。

通过Nuget将AutoMapper依赖项注入包添加到您的解决方案中。

 public class MappingProfile : Profile {
     public MappingProfile() {
         // Add as many of these lines as you need to map your objects
         CreateMap<User, UserDto>();
         CreateMap<UserDto, User>();
     }
 }

 public void ConfigureServices(IServiceCollection services) {
     // .... Ignore code before this

    // Auto Mapper Configurations
     var mapperConfig = new MapperConfiguration(mc =>
     {
         mc.AddProfile(new MappingProfile());
     });

     IMapper mapper = mapperConfig.CreateMapper();
     services.AddSingleton(mapper);

     services.AddMvc();

 }

 public class UserController : Controller {

     // Create a field to store the mapper object
     private readonly IMapper _mapper;

     // Assign the object in the constructor for dependency injection
     public UserController(IMapper mapper) {
         _mapper = mapper;
     }

     public async Task<IActionResult> Edit(string id) {

         // Instantiate source object
         // (Get it from the database or whatever your code calls for)
         var user = await _context.Users
             .SingleOrDefaultAsync(u => u.Id == id);

         // Instantiate the mapped data transfer object
         // using the mapper you stored in the private field.
         // The type of the source object is the first type argument
         // and the type of the destination is the second.
         // Pass the source object you just instantiated above
         // as the argument to the _mapper.Map<>() method.
         var model = _mapper.Map<UserDto>(user);

         // .... Do whatever you want after that!
     }
 }

我希望这能帮助新开始使用ASP.NET核心的人！我欢迎任何反馈或批评，因为我对。NET世界还是新手！