public async Task <IActionResult> PostTaskAnswers([FromBody] TaskAnswers taskAnswers)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
_context.TaskAnswers.Add(taskAnswers);
await _context.SaveChangesAsync();
return(CreatedAtAction("GetTaskAnswers", new { id = taskAnswers.Id }, taskAnswers));
}
public QuestionPage(User user, IEnumerable <Questions> questions, int pageNumber, int [] answers)
{
InitializeComponent();
var qs = questions.ToList();
var count = qs.Count();
//int[] answers = new int[count];
//for (int i=0; i<count;i++)
//{
// answers[i] = 0;
//}
//Application.Current.Properties["answers"] = answers;
StackLayout stackLayout = new StackLayout();
Entry answer = new Entry();
Label progress = new Label();
Label question = new Label();
question.Text = qs[pageNumber].Content;
Button next = new Button();
next.Text = "next";
Button previous = new Button();
previous.Text = "previous";
Button end = new Button();
end.Text = "end";
end.HorizontalOptions = LayoutOptions.End;
answer.Placeholder = "enter answer";
if (answers[pageNumber] != 0)
{
answer.Text = answers[pageNumber].ToString();
}
progress.Text = (pageNumber + 1).ToString() + "/" + count.ToString();
Grid grid = new Grid
{
RowDefinitions =
{
new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
}
},
ColumnDefinitions =
{
new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
},
new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}
}
};
if (pageNumber != 0)
{
grid.Children.Add(previous, 0, 0);
}
if (pageNumber != count - 1)
{
grid.Children.Add(next, 1, 0);
}
stackLayout.Children.Add(progress);
stackLayout.Children.Add(grid);
stackLayout.Children.Add(answer);
stackLayout.Children.Add(question);
//if (pageNumber != 0)
//{
// stackLayout.Children.Add(previous);
//}
//if (pageNumber != count-1)
//{
// stackLayout.Children.Add(next);
//}
stackLayout.Children.Add(end);
next.Clicked += delegate
{
try
{
answers[pageNumber] = int.Parse(answer.Text);
}
catch
{
}
var QuestionPage = new QuestionPage(user, questions, pageNumber + 1, answers);
Navigation.PushModalAsync(QuestionPage);
};
previous.Clicked += delegate
{
var QuestionPage = new QuestionPage(user, questions, pageNumber - 1, answers);
Navigation.PushModalAsync(QuestionPage);
};
end.Clicked += async delegate
{
var displayAlert = await DisplayAlert("Confirm the action", "Did you want end test?", "Yes", "No");
if (displayAlert == true)
{
Tasks taskToSave = new Tasks();
taskToSave.Test = int.Parse(App.Current.Properties["TestID"].ToString());
taskToSave.Start = DateTime.Parse(App.Current.Properties["Start"].ToString());
taskToSave.Finish = DateTime.Now;
int sum = 0;
int i = 0;
foreach (var q in questions)
{
if (q.Answer == answers[i])
{
sum++;
}
i++;
}
taskToSave.Sum = sum;
taskToSave.User = user.Id;
taskToSave.Pass = int.Parse(App.Current.Properties["Pass"].ToString());
ApplicationViewModel applicationViewModel = new ApplicationViewModel();
await applicationViewModel.AddTasks(taskToSave);
int j = 0;
foreach (var q in questions)
{
TaskAnswers taskAnswers = new TaskAnswers();
taskAnswers.Task = applicationViewModel.GetTasksIdForTaskAnswers.Id;
taskAnswers.StudentAnswer = answers[j];
if (answers[j] == q.Answer)
{
taskAnswers.CorrectAnswer = 1;
}
else
{
taskAnswers.CorrectAnswer = 0;
}
taskAnswers.Question = q.Id;
j++;
await applicationViewModel.AddTaskAnswers(taskAnswers);
}
await applicationViewModel.ChekUser(user.Login, user.Password);
await applicationViewModel.GetSubjects(user.Login, user.Password);
var StudentPage = new StudentPage(user, applicationViewModel.subjects);
await Navigation.PushModalAsync(StudentPage);
}
};
Content = stackLayout;
}
