private void SearchEmployee()
        {
            adherentBindingSource.Clear();
            Employee employee = null;

            if (!string.IsNullOrEmpty(txtAdherentID.Text))
            {
                employee = GetEmployeeByID(txtAdherentID.Text);
                if (employee == null)
                {
                    AdherentEP.SetError(txtAdherentID, "Identifiant inconnu");
                }
            }
            else
            {
                employee = SelectEmployee(txtDebNom.Text);
            }
            if (employee != null)
            {
                adherentBindingSource.DataSource = employee;
                GererContextes(Context.Show);
            }
        }
        private void RechercherAdherent()
        {
            adherentBindingSource.Clear();
            Adherent adherent = null;

            if (!string.IsNullOrEmpty(txtAdherentID.Text))
            {
                adherent = SelectionnerAdherentByID(txtAdherentID.Text);
                if (adherent == null)
                {
                    AdherentEP.SetError(txtAdherentID, "Identifiant inconnu");
                }
            }
            else
            {
                adherent = SelectionnerAdherent(txtDebNom.Text);
            }
            if (adherent != null)
            {
                adherentBindingSource.DataSource = adherent;
                GererContextes(Contexte.Affichage);
            }
        }