private void refresh(IEmailKontakt contact) {
		ek = contact;
		if (ek == null) {
			textField.setText("");
			textField_1.setText("");
			textField_2.setText("");
			textField_3.setText("");
			ek = ekd.create();
		} else {
			textField.setText(ek.getVorname());
			textField_1.setText(ek.getNachname());
			textField_2.setText(ek.getEmail());
			textField_3.setText(ek.getId() + "");
		}
	}