private void LogoutYesBtn_OnClick(object sender, RoutedEventArgs e)
{
TheTeacher = null;
AttendingStudents.Clear();
CurrentClassCourse = null;
new LoginWindow().Show();
Close();
}
private void CalculateSizes()
{
NumberOfStudents = AttendingStudents.Count(theStudent => theStudent.IsAttending);
StudentsLeft = AttendingStudents.Count(theStudent => !theStudent.AlreadyPicked && theStudent.IsAttending);
mIsSettingSizes = true;
GroupSize = 0;
NumberOfGroups = 0;
mIsSettingSizes = false;
if (NumberOfStudents > 2)
{
GroupSize = 2;
}
else
{
GroupSize = NumberOfStudents;
}
}
private void GetGroups()
{
var theSortedStudents = AttendingStudents.Where(theStudent => theStudent.IsAttending)
.OrderBy(theStudent => Guid.NewGuid());
int theCurrentGroup = 1;
foreach (var theStudent in theSortedStudents)
{
theStudent.Group = theCurrentGroup;
++theCurrentGroup;
if (theCurrentGroup > NumberOfGroups)
{
theCurrentGroup = 1;
}
}
RefreshStudents();
}
private void SetAttendance(IEnumerable <Guid> aStudentIds)
{
if (mAppService.AppState.SelectedSection.AttendingStudents != null)
{
return;
}
mAppService.AppState.SelectedSection.AttendingStudents = new ObservableCollection <AttendingStudent>();
foreach (Guid theGuid in aStudentIds)
{
var theStudent = mDataService.GetStudent(theGuid);
if (theStudent != null)
{
AttendingStudents.Add(new AttendingStudent()
{
Id = theGuid, Name = theStudent.ToString(), IsAttending = true
});
}
}
}
private void StudentIds_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (e.OldItems != null)
{
var theStudentsToRemove = new List <AttendingStudent>();
foreach (Guid theGuid in e.OldItems)
{
foreach (var theStudent in AttendingStudents)
{
if (theStudent.Id == theGuid)
{
theStudentsToRemove.Add(theStudent);
}
}
}
foreach (var theStudent in theStudentsToRemove)
{
AttendingStudents.Remove(theStudent);
}
}
if (e.NewItems != null)
{
foreach (Guid theGuid in e.NewItems)
{
var theStudent = mDataService.GetStudent(theGuid);
if (theStudent != null)
{
AttendingStudents.Add(new AttendingStudent()
{
Id = theGuid, Name = theStudent.ToString(), IsAttending = true
});
}
}
}
}
void HandleTimer_Tick(object sender, EventArgs e)
{
LuckyStudent = AttendingStudents.Where(theStudent => !theStudent.AlreadyPicked && theStudent.IsAttending)
.OrderBy(theStudent => Guid.NewGuid())
.FirstOrDefault();
if (mCounter > 25 || StudentsLeft == 1)
{
if (LuckyStudent != null)
{
LuckyStudent.AlreadyPicked = true;
}
CalculateSizes();
mCounter = 0;
mTimer.Stop();
IsBusy = false;
}
else
{
mCounter++;
}
}
