private void btpDelete_Click(object sender, EventArgs e) { int selectedPatientsCount = lvPatients.SelectedItems.Count; if (selectedPatientsCount != 0) { ListViewItem selectedPatient = lvPatients.SelectedItems[0]; var ddd = selectedPatient.SubItems[10].Text; Guid selectedId = Guid.Parse(selectedPatient.SubItems[10].Text); var confirmResult = MessageBox.Show("Are you sure to delete this patient?\nPatient login " + selectedPatient.SubItems[4].Text, "Confirm edit!", MessageBoxButtons.YesNo); if (confirmResult == DialogResult.Yes) { using (var client = new HaServiceClient()) { client.DeletePatient(selectedId); } FillPatientListView(); } else { //DialogResult = DialogResult.None; return; } } }