public void Initialize(Person connectedPerson)
        {
            ConnectedPerson = connectedPerson;

            // Get the list of existing classes
            ClassesTableData = new ObservableCollection <ClassData>(_schoolData.Classes.AsEnumerable().Select(currClass => ModelClassToClassData(currClass)).ToList());

            // Create the basic list of available classes
            AvailableTeachers.Clear();

            // Add a 'No teacher' option, as not all classes have a teacher assigned to them.
            AvailableTeachers.Add(NOT_ASSIGNED, "אין מורה משויך");

            // Create the list of teachers that are not homeroom teachers already.
            _schoolData.Teachers.Where(teacher => teacher.classID == null && !teacher.Person.User.isDisabled).ToList()
            .ForEach(teacher => AvailableTeachers.Add(teacher.teacherID, teacher.Person.firstName + " " + teacher.Person.lastName));

            // Create the basic list of available rooms
            AvailableRooms.Clear();

            // Add a 'no room' option, as not all classes have an an assigned room.
            AvailableRooms.Add(NOT_ASSIGNED, "אין חדר משויך");

            // Create the list of rooms that are not assigned to a specific class already
            _schoolData.Rooms.Where(room => room.Classes.Count() == 0).ToList()
            .ForEach(room => AvailableRooms.Add(room.roomID, room.roomName));

            // Reset selections
            SelectedTeacher = NOT_ASSIGNED;
            SelectedRoom    = NOT_ASSIGNED;

            // For some reason, after re-initializing this view, the selections are not updated properly in the view unless called again
            OnPropertyChanged("SelectedTeacher");
            OnPropertyChanged("SelectedRoom");
        }
 /// <summary>
 /// Assistant method that clears all the ViewModel properties
 /// </summary>
 private void ResetData()
 {
     AvailableSearchChoices.Clear();
     LessonsTableData.Clear();
     AvailableClasses.Clear();
     AvailableCourses.Clear();
     AvailableTeachers.Clear();
     AvailableRooms.Clear();
     SelectedLesson       = null;
     SelectedSearchChoice = NOT_ASSIGNED;
     SelectedTeacher      = NOT_ASSIGNED;
     SelectedClass        = NOT_ASSIGNED;
     LessonFirstDay       = NOT_ASSIGNED;
     LessonSecondDay      = NOT_ASSIGNED;
     LessonThirdDay       = NOT_ASSIGNED;
     LessonFourthDay      = NOT_ASSIGNED;
     LessonFirstHour      = NOT_ASSIGNED;
     LessonSecondHour     = NOT_ASSIGNED;
     LessonThirdHour      = NOT_ASSIGNED;
     LessonFourthHour     = NOT_ASSIGNED;
 }