//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;
}