有没有办法在没有第三方库的情况下在.NET核心中获得EmployeeID？

public class Employee
{
    public int EmployeeID { get; set; }
}

public void ConfigureServices(IServiceCollection services)
{
    services.AddSingleton<Employee>(); // 注册Employee类的实例
    // 其他服务的注册
}

public class MyController : Controller
{
    private readonly Employee _employee;

    public MyController(Employee employee)
    {
        _employee = employee;
    }

    public IActionResult Index()
    {
        int employeeID = _employee.EmployeeID;
        // 其他操作
        return View();
    }
}