private void Button_Click_Help(object sender, RoutedEventArgs e)
{
StartModelWindow win = new StartModelWindow("ChangeQuestions"); //вызываем окно справки
win.ShowDialog();
}
private void Button_Click_Ref(object sender, RoutedEventArgs e) //кнопка "Справка"
{
StartModelWindow win = new StartModelWindow(); //вызываем окно справки
win.ShowDialog();
}