private async void BtnConsulta_Clicked(object sender, EventArgs e)
        {
            using (var cliente = new HttpClient())
            {
                // string apikey = "b73171bf7ac8904c46d9067bc99880f9";
                string        url         = "http://api.openweathermap.org/data/2.5/weather?q=" + Ciudad.Text + "&appid=b73171bf7ac8904c46d9067bc99880f9&units=metric&lang=es";
                Task <string> taskjsontxt = cliente.GetStringAsync(url);

                lblResultado.Text = "Consultando...";

                var jsontxt = await taskjsontxt;

                var data = OpenWheatherClass.FromJson(jsontxt);
                lblResultado.Text = "Nombre estacion: " + data.Name +
                                    "\nCiudad: " + Ciudad.Text +
                                    "\nPais: " + data.Sys.Country +
                                    "\nTemperatura: " + data.Main.Temp +

                                    "ºC\nHumedad: " + data.Main.Humidity +
                                    "%\nDescripción: " + data.Weather[0].Description;
                lbltemperatura.Text = data.Main.Temp + "Grados ";
                //string iconourl = "http://openweathermap.org/img/w/" + data.Weather[0].Icon + ".png";
                //UriImageSource img = new UriImageSource();
                //img.Uri = new Uri(iconourl);
                //Icono.Source = img;
                Icono.Source = ImageSource.FromResource("ET_6_2OpenWheater.Images.Weather." + data.Weather[0].Icon + ".png");

                BtnHablame_Clicked(sender, e);
            }
        }
 public static string ToJson(this OpenWheatherClass self) => JsonConvert.SerializeObject(self, ET_6_2OpenWheater.Converter.Settings);