public static void HandleDeleteSubject(ListView lvwSubject, string id_subject) { foreach (ListViewItem item in lvwSubjectState.Items) { if (item.SubItems[0].Text == id_subject) { bool result = SubjectDAL.DeleteSubjectWithId(id_subject); if (result) { lvwSubjectState.Items.Remove(item); RenderListViewWithCourseAndFaculty(lvwSubject); } return; } } MessageBox.Show(MessageBoxText.NotSelectListView, MessageBoxText.CaptionWarning, MessageBoxButtons.OK, MessageBoxIcon.Warning); }