ASP.NET 5 MVC(Visual Studio 2015)：一个名为Inject的关键字

[Authorize]
public class AccountController : Controller
{
    private readonly UserManager<ApplicationUser> _userManager;
    private readonly SignInManager<ApplicationUser> _signInManager;
    private readonly IEmailSender _emailSender;
    private readonly ISmsSender _smsSender;
    private readonly ApplicationDbContext _applicationDbContext;
    private static bool _databaseChecked;

    public AccountController(
        UserManager<ApplicationUser> userManager,SignInManager<ApplicationUser> signInManager,IEmailSender emailSender,ISmsSender smsSender,ApplicationDbContext applicationDbContext)
    {
        _userManager = userManager;
        _signInManager = signInManager;
        _emailSender = emailSender;
        _smsSender = smsSender;
        _applicationDbContext = applicationDbContext;
    }

    //
    // GET: /Account/Login
    [HttpGet]
    [AllowAnonymous]
    public IActionResult Login(string returnUrl = null)
    {
        ViewData["ReturnUrl"] = returnUrl;
        return View();
    }
  ...
  }

登录视图有一个注入关键字,如：

@model LoginViewModel
@inject SignInManager<ApplicationUser> SignInManager

@{
   ViewData["Title"] = "Log in";

 }

但是,我没有在其他视图中看到这一点,并且应用程序中没有Ninject和Unity的痕迹.这是什么？一个新的惊人功能？