public void UpdateWeather(string city)
{
string url = String.Format("http://api.openweathermap.org/data/2.5/forecast/daily?q={0}&cnt={1}&units=metric&mode=json&APPID={2}", city, CNT, WeatherApiClient.GetAPIKey());
Task <RootObject> t = Task.Run(() => WeatherApiClient.GetWeatherForecast(url));
t.Wait();
RootObject r = t.Result;
if (r != null)
{
WeatherList = new ObservableCollection <DayElem>(r.list);
SelectedDay = WeatherList[0];
Root = r;
}
}