private void button2_Click(object sender, EventArgs e)
{
stationsList.Items.Clear();
selectedStations.Clear();
Stopwatch stopwatch = Stopwatch.StartNew();
Station[] stations = client.GetStationsOf((string)citiesList.SelectedItem);
stopwatch.Stop();
int s = stations.Length;
for (int i = 0; i < s; i++)
{
stationsList.Items.Add(stations[i].Name);
selectedStations.Add(stations[i]);
}
selectNewStationButton.Enabled = false;
label4.Text = "Execution time of GetStationsOf: " + stopwatch.ElapsedMilliseconds + "ms";
label4.Visible = true;
button2.Enabled = false;
stationsList.Enabled = true;
}