protected async override void OnNavigatedTo(NavigationEventArgs e)
{
_viewModel = this.DataContext as MainPageViewModel;
_cameraService = new CameraCaptureService();
_recognitionService = new FaceRecognitionService(subscriptionKey, faceEndpoint);
_imageFolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync("ProfilePhotoFolder", CreationCollisionOption.OpenIfExists);
}
