asp.net-mvc – 如何管理服务层中的事务？

我为服务使用了第二个(内部)构造函数：

public class MyService
{
private IUnitOfWork _uow;
private bool _uowInternal;

public MyService()
{
    _uow = new UnitOfWork();
    _uowInternal = false;
}

internal MyService(IUnitOfWork uow)
{
    _uow = uow;
    _uowInternal = true;
}
public MyServiceCall()
{
    // Create second service,passing in my UnitOfWork:
    var svc2 = new MySecondService(_uow);

    // Do your stuff with both services.
    ....
    // Commit my UnitOfWork,which will include all changes from svc2:
    Commit();
}

public void Commit()
{
    if(!_uowInternal)
        _uow.Commit();
}
}