C# (CSharp) ICompagnyService примеры использования

Пример #1

 public HomeController(ICompagnyService service)
 {
     CompagnyService = service;
 }

Пример #2

        //public CompagniesController()
        //{

        //}
        public CompagniesController(ICompagnyService service)
        {
            CompagnyService = service;
        }