private void btn_removeSubject_Click(object sender, EventArgs e) { string subjToEditName = (string)lb_subjects.SelectedItem; Subject subject = _subjects[lb_subjects.SelectedIndex]; try { _proxy.DeleteSubject(subject); } catch (Exception ex) { MessageBox.Show(ex.Message, "Повідомлення", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); } LoadSubjects(); return; }