private void Button1_Click(object sender, RoutedEventArgs e)
{
iot = new IOTHub();
string val = iot.SendMessage(textBox.Text);
textBox.Text = val;
}
private void button_Click(object sender, RoutedEventArgs e)
{
button.Background = new SolidColorBrush(Windows.UI.Colors.Green);
iot = new IOTHub();
Thread tr = new Thread(iot.ListenMethod);
tr.Start();
}