private void btn_process_Click(object sender, RoutedEventArgs e) { OMRSoft.OMRSoft obj = new OMRSoft.OMRSoft(file); obj.PreProcess(); obj.blob_detect(); obj.generate_results(sheet); Save_To_DB__Single_ new_window = new Save_To_DB__Single_(obj, file); new_window.ShowDialog(); }