public void DeleteTutoringSession(String code, DateTime startTime, DateTime endTime, int?participants)
{
TutoringSession tmpTs = new TutoringSession(code, startTime, endTime, participants);
ICollection <TutoringSession> toBeDeleted = new List <TutoringSession>();
foreach (TutoringSession ts in SelectedCourse.TutoringSessions)
{
if (ts.Equals(tmpTs))
{
toBeDeleted.Add(ts);
}
}
foreach (TutoringSession ts in toBeDeleted)
{
selectedCourse.TutoringSessions.Remove(ts);
}
try
{
dal.DeleteTutoringSession(tmpTs);
TutoringSessions.Remove(tmpTs);
//selectedCourse.TutoringSessions.Remove(SelectedTutoringSession);
Status = "Tutoring session was removed!";
SelectedTutor = null;
}
catch (Exception ex)
{
// Rollback
foreach (TutoringSession ts in toBeDeleted)
{
selectedCourse.TutoringSessions.Add(ts);
}
Status = ExceptionHandler.GetErrorMessage(ex);
}
Courses = new ObservableCollection <Course>(dal.GetAllCourses());
NotifyPropertyChanged("Courses");
NotifyPropertyChanged("TutoringSessions");
selectedCourse = Courses.FirstOrDefault(c => c.Code.Equals(code));
NotifyPropertyChanged("SelectedCourse");
}
public void AddTutoringSession(String code, DateTime startTime, DateTime endTime)
{
try
{
TutoringSession ts = new TutoringSession(code, startTime, endTime, null);
dal.AddTutoringSession(ts);
TutoringSessions.Add(ts);
TutoringSessions = new ObservableCollection <TutoringSession>(dal.GetAllTutoringSessions());
NotifyPropertyChanged("TutoringSessions");
Courses = new ObservableCollection <Course>(dal.GetAllCourses());
NotifyPropertyChanged("Courses");
Status = "Tutoring session was added!";
SelectedTutor = null;
}
catch (Exception ex)
{
Status = ExceptionHandler.GetErrorMessage(ex);
}
}
