//pass Data to WeatherViewModel after click launch button
 private void LaunchButton_Click(object sender, RoutedEventArgs e)
 {
     _viewModel.Reset();
     _viewModel.SetCity(CityTextBox.Text);
     _viewModel.SetDays(DaysTextBox.Text);
     _viewModel.CreateHTTPRequestURL();
     _viewModel.GetXMLData();
     _viewModel.PopulateDayWeatherList();
     _viewModel.GetReturnedLocation();
     lvDataBinding.ItemsSource = _viewModel.daysObservableCollection;
 }