private void Fill()
        {
            switch (type)
            {
            case Enums.CommonOperationType.ODoctor:
                pnlNurse.Visible  = false;
                pnlDoctor.Visible = true;
                using (var uow = (AdoNetUnitOfWork)UnitOfWorkFactory.Create(UnitOfWorkFactory.ConnectionType.SQL, Connection.connectionString))
                {
                    var docRepos = new DoctorRepository(uow);
                    cmbDoc.ValueMember   = "ID";
                    cmbDoc.DisplayMember = "FullName";
                    cmbDoc.DataSource    = docRepos.GetAllDoctorsL();
                    cmbDoc.Text          = "Choose A Doctor...";
                }
                break;

            case Enums.CommonOperationType.ONurse:
                pnlDoctor.Visible = false;
                pnlNurse.Visible  = true;
                using (var uow = (AdoNetUnitOfWork)UnitOfWorkFactory.Create(UnitOfWorkFactory.ConnectionType.SQL, Connection.connectionString))
                {
                    var nurseRepos = new NurseRepository(uow);
                    cmbNurse.ValueMember   = "ID";
                    cmbNurse.DisplayMember = "FullName";
                    cmbNurse.DataSource    = nurseRepos.GetAllNursesL();
                    cmbNurse.Text          = "Choose A Nurse...";
                }
                break;
            }
        }