private void ScannedLineupGridView_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex < 0 || e.RowIndex >= scanned_channels_.Count)
            {
                return;
            }
            Channel           ch     = scanned_channels_[e.RowIndex];
            ScannedGridColumn column = ScannedColumnToEnum(e.ColumnIndex);

            switch (column)
            {
            case ScannedGridColumn.Listing:
                new ListingSelectionForm(ch).ShowDialog();
                ScannedLineupGridView.InvalidateCell(e.ColumnIndex, e.RowIndex);
                break;

            case ScannedGridColumn.Remove:
                try
                {
                    ChannelEditing.DeleteChannel(ch);
                }
                catch (Exception exc)
                {
                    new ErrorReporter.ErrorReportingForm("Exception occured when attempting to remove channel.", exc);
                }
                SelectAndLoadScannedLineup(scanned_lineup_);
                break;
            }
        }