private void removeCourse(Course course, SemesterView dgv)
{
int semPosition = dgv.getSemesterPosition();
dgv.removeCourse(course);
semesterList[semPosition] = dgv.getSemester();
}
private void addClass(object sender, EventArgs e, SemesterView dgv)
{
List <Course> coursesToAdd = getClasses();
int semPosition = dgv.getSemesterPosition();
dgv.addCourses(coursesToAdd);
semesterList[semPosition] = dgv.getSemester();
}