public AddClassForm()
{
InitializeComponent();
//dynamically add professors to combo box
Util.addProfessors(cbClassProfessor, profId, false, false, null, null);
//dynamically add possible grades
Util.addLetterGrades(cbFinalLetterGrade);
//dynamically add possible semesters
Util.addSemesters(cbSemester, semesterId, false);
}