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我正在尝试在我的Global.asax文件中实现依赖注入。下面是代码-

    public class MvcApplication : System.Web.HttpApplication
    {

        private readonly IJobTimerBS _objTimer;

           // want to replace this constructor injection code. How ????

        //public MvcApplication(IJobTimerBS jobTimerBS)
        //{
        //    _objTimer = jobTimerBS; 
        //}

       protected void Application_Start()
       {
          UnityConfig.RegisterComponents();
          processingTimer_Elapsed();
       }
       void processingTimer_Elapsed()
       {
        _objTimer.QuoteDeleteJobTimer();
       }
    }

业务层中的代码-

public class JobTimerBS : IJobTimerBS
{
    private readonly IUnitofWork _unitOfWork;
    private IJobTimerRepository _jobTimerRepository;

    public JobTimerBS(IJobTimerRepository jobTimerRepository, IUnitofWork unitOfWork)
    {
        _unitOfWork = unitOfWork;
        _jobTimerRepository = jobTimerRepository;
        _jobTimerRepository.UnitOfWork = unitOfWork;
    }

    public void QuoteDeleteJobTimer()
    {
        _jobTimerRepository.JobTimer();
    }
}   

我的问题是当我不能使用构造函数注入时,如何在这种情况下实现依赖注入。如何在业务层中实例化当前的JobTimerBS类。Global.asax

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