Google weather Api

public void  wetter()
        {
            try
            {
                string ort; // ort = Location
                ort = txtOrt.Text;
                XmlDocument googlewetter = new XmlDocument();
                googlewetter.Load(string.Format("http://www.google.com/ig/api?weather={0}", ort));
                
string stadt = googlewetter.SelectSingleNode("/xml_api_reply/weather/forecast_information/city").Attributes[0].InnerText;
                lbStadt.Text = stadt;
                
string temperatur = googlewetter.SelectSingleNode("/xml_api_reply/weather/current_conditions/temp_c").Attributes[0].InnerText;
                lbTemperatur.Text = temperatur;
                
string aktuell = googlewetter.SelectSingleNode("/xml_api_reply/weather/current_conditions/condition").Attributes[0].InnerText;
                lbAktuell.Text = aktuell;
                
string wind = googlewetter.SelectSingleNode("/xml_api_reply/weather/current_conditions/wind_condition").Attributes[0].InnerText;
                lbWind.Text = wind;
                
string luft = googlewetter.SelectSingleNode("/xml_api_reply/weather/current_conditions/humidity").Attributes[0].InnerText;
                lbLuft.Text = luft;
            }
            catch
            {
                MessageBox.Show("Error");
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            wetter();
        }