private void RelayControlChangedEvent(object sender, EventArgs e)
{
CheckBox cb = (CheckBox)sender;
String sn = cbDevices.Text;
int relay = (int)cb.Tag;
bool value = cb.Checked;
_relays.SetRelay(sn, relay, value);
}
private static void SetTargetRelay(int relayIndex, bool value)
{
_relays.SetRelay(SerialNumber, relayIndex, value);
}