private void button1_Click(object sender, EventArgs e)
{
citiesList.Items.Clear();
Stopwatch stopwatch = Stopwatch.StartNew();
City[] cityObjects = client.GetCities();
stopwatch.Stop();
int s = cityObjects.Length;
for (int i = 0; i < s; i++)
{
citiesList.Items.Add(cityObjects[i].Name);
}
label1.Visible = false;
label3.Text = "Execution time of GetCities: " + stopwatch.ElapsedMilliseconds + "ms";
label3.Visible = true;
citiesList.Enabled = true;
button2.Enabled = false;
button3.Enabled = false;
}
