private void Delete_Button(object sender, RoutedEventArgs e) { string deleteQry = $"DELETE FROM bds.residentinfo WHERE id = '{ResidentId}'"; var count = DBOperation.ExecuteNonQuery(deleteQry); if (count > 0) { Resident.DeleteRecord(ResidentId); MessageBox.Show("Deleted", "Info", MessageBoxButton.OK, MessageBoxImage.Information); Close(); } }