public MainWindow() { InitializeComponent(); vm = new MainWindowViewModel(); DataContext = vm; Answer.Focus(); }
private void Answer_KeyDown(object sender, KeyEventArgs e) { if (e.Key == Key.Enter) { if(vm.CurrentProblem == null) { vm = new MainWindowViewModel(); DataContext = vm; } int answer; if (int.TryParse(Answer.Text, out answer)) { vm.AnswerCurrentProblem(answer); } Answer.Text = ""; } }