public FormBooking()
        {
            InitializeComponent();

            List <string> TreatmentList = Controller.ControllerGetAllTreatment();
            List <string> DoctorList    = Controller.ControllerGetAllDoctor();
            List <string> CageList      = Controller.ControllerGetCage();

            DoctorArray = new string[DoctorList.Count / 2, 2];
            for (int i = 0; i < DoctorList.Count / 2; i++)
            {
                DoctorArray[i, 0] = DoctorList[(i * 2)];
                DoctorArray[i, 1] = DoctorList[(i * 2) + 1];
                comboBoxDoctorChoice.Items.Add(DoctorList[(i * 2) + 1]);
            }
            comboBoxDoctorChoice.SelectedIndex = 0;

            TreatmentArray = new string[TreatmentList.Count / 2, 2];
            for (int i = 0; i < TreatmentList.Count / 2; i++)
            {
                TreatmentArray[i, 0] = TreatmentList[(i * 2)];
                TreatmentArray[i, 1] = TreatmentList[(i * 2) + 1];
                comboBoxTreatmentsChoice.Items.Add(TreatmentList[(i * 2) + 1]);
            }
            comboBoxTreatmentsChoice.SelectedIndex = 0;

            CageArray = new string[CageList.Count / 2, 2];
            for (int i = 0; i < CageList.Count / 2; i++)
            {
                CageArray[i, 0] = CageList[(i * 2)];
                CageArray[i, 1] = CageList[(i * 2) + 1];
                comboBoxCageChoice.Items.Add(CageList[(i * 2)] + " " + CageList[(i * 2 + 1)]);
            }
            comboBoxCageChoice.SelectedIndex = 0;

            for (int i = 0; i < 10; i++)
            {
                comboBoxDaysChoice.Items.Add(i);
            }
            comboBoxDaysChoice.SelectedIndex = 0;
        }