/// <summary>
/// Submits the answer
/// </summary>
/// <returns>
/// Task
/// </returns>
private async Task SubmitAnswer()
{
SubmitAnswerRequest req = new SubmitAnswerRequest
{
answerId = CurrentQuestion.AnswerIndices[SelectedAnswer]
};
SubmitAnswerResponse res;
byte[] buf;
int[] answerIndices = RandomAnswerIndices();
try
{
// Send the submit answer request
await Client.Send(SubmitAnswerRequest.CODE, Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(req)));
// Get from the server the response
buf = await Client.Recv();
// Deserialize the response
res = JsonConvert.DeserializeObject <SubmitAnswerResponse>(Encoding.UTF8.GetString(buf));
// If an error occurred
if (res.status == 1)
{
// Show error
await DialogHost.Show(new Dialogs.MessageDialog {
Message = "Unable to submit answer!"
});
throw new Exception();
}
else
{
// Highlight the correct answer
GetRadioButtonForAnswer(res.correctAnswerId).Foreground = Brushes.LightGreen;
// If was wrong, highlight in red the wrong answer
if (res.correctAnswerId != CurrentQuestion.AnswerIndices[SelectedAnswer])
{
radioButtons[SelectedAnswer].Foreground = Brushes.Red;
}
}
} catch
{
Dispatcher.Invoke(() =>
{
// Close this window and re-show the auth window to connect to the server
new AuthWindow().Show();
Close();
});
}
}
private async void TimerTick(object sneder, EventArgs e)
{
// If the time ran out, send an empty answer
if (RemainingTime == 0)
{
// Stop the timer
timer.Stop();
DisableRadioButtons();
SubmitAnswerRequest req = new SubmitAnswerRequest
{
answerId = 5
};
SubmitAnswerResponse res;
byte[] buf;
int[] answerIndices = RandomAnswerIndices();
try
{
// Send the submit answer request
await Client.Send(SubmitAnswerRequest.CODE, Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(req)));
// Get from the server the response
buf = await Client.Recv();
// Deserialize the response
res = JsonConvert.DeserializeObject <SubmitAnswerResponse>(Encoding.UTF8.GetString(buf));
// If an error occurred
if (res.status == 1)
{
// Show error
await DialogHost.Show(new Dialogs.MessageDialog {
Message = "Unable to submit answer!"
});
throw new Exception();
}
else
{
// Highlight the correct answer
GetRadioButtonForAnswer(res.correctAnswerId).Foreground = Brushes.LightGreen;
// If was wrong, highlight in red the wrong answer
if (SelectedAnswer != -1 && res.correctAnswerId != CurrentQuestion.AnswerIndices[SelectedAnswer])
{
radioButtons[SelectedAnswer].Foreground = Brushes.Red;
}
}
} catch
{
Dispatcher.Invoke(() =>
{
// Close this window and re-show the auth window to connect to the server
new AuthWindow().Show();
Close();
});
return;
}
// Enable the button
submitNextBtn.IsEnabled = true;
// Change the button to the next button
submitNextBtn.Content = "Next";
}
else
{
RemainingTime -= 1;
}
Update();
}