void BtnAnswerClick(object sender, EventArgs args)
{
if (Revision)
{
return;
}
BtnAnswers.ForEach(x => x.IsEnabled = true);
((View)sender).IsEnabled = false;
CurrentQ.TestAnswer = Grid.GetColumn((View)sender) + Grid.GetRow((View)sender);
}
void BtnAnswerClick(object sender, EventArgs args)
{
if (Revision)
{
return;
}
BtnAnswers.ForEach(x => x.IsEnabled = true);
((Button)sender).IsEnabled = false;
CurrentQ.TestAnswer = BtnAnswers.IndexOf((Button)sender);
}
void LoadQuestion()
{
promptValue.Text = (Questions.IndexOf(CurrentQ) + 1) + ". " + CurrentQ.Prompt;
#region Adding Answer Controls
GridAnswers.Children.Clear();
BtnAnswers.Clear();
for (int i = 0; i < CurrentQ.Answers.Count; i++)
{
View control;
if (CurrentQ.Answers[i].StartsWith("@"))
{
#region Image
control = new Image()
{
Source = CurrentQ.Answers[i].Substring(1)
};
((Image)control).GestureRecognizers.Add(new TapGestureRecognizer()
{
Command = new Command(() =>
{
BtnAnswerClick(control, EventArgs.Empty);
})
});
#endregion
}
else
{
#region Button
control = new Button()
{
Text = CurrentQ.Answers[i], BackgroundColor = Color.Default
};
((Button)control).Clicked += BtnAnswerClick;
#endregion
}
const int columns = 2;
Grid.SetRow(control, i / columns);
Grid.SetColumn(control, i % columns);
if (!Revision)
{
if (CurrentQ.TestAnswer == -1)
{
control.IsEnabled = true;
}
else
{
control.IsEnabled = !(i == CurrentQ.TestAnswer);
}
}
else
{
if (CurrentQ.TestAnswer == i)
{
control.BackgroundColor = Color.Red;
}
if (CurrentQ.CorrectAnswer == i)
{
control.BackgroundColor = Color.Green;
}
}
BtnAnswers.Add(control);
GridAnswers.Children.Add(control);
}
#endregion
#region Back and Next Visibility
if (CurrentQuestionNumber == 0)
{
btnBack.IsVisible = false;
}
else if (CurrentQuestionNumber == Questions.Count - 1)
{
btnNext.IsVisible = false;
}
else
{
btnBack.IsVisible = btnNext.IsVisible = true;
}
#endregion
}
