private void btnSavePaopleMan_Click(object sender, EventArgs e) { Person p = (Person)listBoxPeopleMan.SelectedItem; try { if (comboBoxPersonRole.SelectedIndex == 0) { personlogic.EditPerson(p, new Student(textBoxFName.Text, textBoxLName.Text, textBoxPCN.Text)); } else { personlogic.EditPerson(p, new Teacher(textBoxFName.Text, textBoxLName.Text, textBoxPCN.Text)); } MessageBox.Show("Editing was successful."); textBoxFName.Text = ""; textBoxLName.Text = ""; textBoxPCN.Text = ""; UpdatePeopleListbox(); } catch (Exception ex) { MessageBox.Show(ex.Message); } }