public Service(ParticipantDbRepo pdr, CursaDbRepo cdr, InscriereDbRepo idr, StaffDbRepo sdr)
 {
     this.pdr = pdr;
     this.cdr = cdr;
     this.idr = idr;
     this.sdr = sdr;
 }
        static void Main()
        {
            ParticipantDbRepo pdr     = new ParticipantDbRepo();
            CursaDbRepo       cdr     = new CursaDbRepo();
            InscriereDbRepo   idr     = new InscriereDbRepo(pdr, cdr);
            StaffDbRepo       sdr     = new StaffDbRepo();
            Service           service = new Service(pdr, cdr, idr, sdr);


            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1(service));
        }