/// <summary>
/// When play button is clicked, delegate the call to the question window,
/// responsible for initalizing quiz.
/// </summary>
private async void PlayButton_Click(object sender, RoutedEventArgs e)
{
Window window = await QuestionWindow.CreateQuestionWindow();
this.Close();
window.Show();
}
public static async Task <QuestionWindow> CreateQuestionWindow()
{
QuestionWindow questionWindow = new QuestionWindow();
QuestionPage page = await QuestionPage.CreateQuestionPage();
questionWindow.QuestionFrame.Content = page;
return(questionWindow);
}