private void UpdateSemesters(StudentDashboardViewModel viewModel)
        {
            foreach (var semester in viewModel.Semesters)
            {
                var semesterPeriod = new SemesterPeriod(viewModel.DateOfEnactment, semester.Sequential);
                var compareResult = semesterPeriod.Compare(DateTime.Now);

                if (compareResult < 0)
                {
                    semester.IsReadOnly = true;
                }
                else if (compareResult == 0)
                {
                    semester.IsCurrent = true;
                    // current semester
                }
            }
        }