private void buttonAdd_Click(object sender, RoutedEventArgs e)
        {
            var editDoctorForm = new EditDoctorForm(0);

            editDoctorForm.ShowDialog();
            this.Presenter.LoadDoctorsByCriterias();
        }
        private void buttonEdit_Click(object sender, RoutedEventArgs e)
        {
            var selectedDoctor = this.GetSelectedDoctor();

            if (selectedDoctor == null)
            {
                return;
            }

            int selectedDoctorId = selectedDoctor.DoctorId;
            var editDoctorForm   = new EditDoctorForm(selectedDoctorId);

            editDoctorForm.ShowDialog();
            this.Presenter.LoadDoctorsByCriterias();
        }