public bool InsertProfessor(Professor professor)
{
db.Professors.Add(professor);
return(db.SaveChanges() > 0);
}
public bool RemoveProfessor(Professor professor)
{
db.Professors.Remove(professor);
return(db.SaveChanges() > 0);
}
public bool DeleteProfessor(Professor professor, int?id)
{
professor = db.Professors.Where(x => x.ProfessorID == id).FirstOrDefault();
db.Professors.Remove(professor);
return(db.SaveChanges() > 0);
}