private void GetDoctorsListInComboBox()
{
DoctorManager doctorManager=new DoctorManager();
List<Doctor> doctorList=new List<Doctor>();
doctorList=doctorManager.GetDoctorList();
doctorComboBox.DataSource = null;
doctorComboBox.DataSource = doctorList;
doctorComboBox.ValueMember = "Id";
doctorComboBox.DisplayMember = "Name";
}
