private async void SubmitImage_Click(object sender, RoutedEventArgs e)
        {
            var picker = new Windows.Storage.Pickers.FileOpenPicker();

            picker.ViewMode = Windows.Storage.Pickers.PickerViewMode.Thumbnail;
            picker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.PicturesLibrary;
            picker.FileTypeFilter.Add(".jpg");
            picker.FileTypeFilter.Add(".jpeg");
            picker.FileTypeFilter.Add(".png");

            Windows.Storage.StorageFile file = await picker.PickSingleFileAsync();

            Queries queries = new Queries();

            queries.AddFaceToPerson(Convert.ToInt32(UserID.Text), file);
        }