private void ShowVideoData() { MainVideoAdapter adapter = new MainVideoAdapter(); var dataGridList = adapter.CollectMainVideoData(); SecondaryVideoAdapter ad = new SecondaryVideoAdapter(); var secondList = ad.ShowSubVideoData(); Data.ShowData(videoDataGridView, dataGridList); videoDataGridView.Rows.Add(string.Empty, string.Empty); Data.ShowData(videoDataGridView, secondList); }