private void btnTransmitters_Click(object sender, EventArgs e) { var txList = sd.GetTransmitters("GB"); if (txList == null) { reportErrors(); return; } lbContinents.Items.Clear(); lbCountries.Items.Clear(); foreach (var tx in txList) { lbContinents.Items.Add($"{tx.transmitterArea}\t{tx.transmitterID}"); } mode = 2; }