public classStudent LoginStudent(string id, string password)
{
//first check if user exists as a Student then check if password is true
if (database.table_student.Any(user => user.idStudent == id) && database.table_user.Any(user => user.idUser == id && user.password == password))
{
//return Class student
this.user = new classStudent(id, database, this.IsTA(id), numberYearFromStart, term);
return((classStudent)this.user);
}
return(null);
}
//login method and creater of professor
public classProfessor LoginProfessor(string id, string password)
{
//first check if user exists as a professor then check if password is true
if (database.table_professor.Any(user => user.idProfessor == id) &&
database.table_user.Any(user => user.idUser == id && user.password == password))
{
//return professor if user is valid
this.user = new classProfessor(id, database, this.IsPrimeProfessor(id), numberYearFromStart, term);
return((classProfessor)this.user);
}
return(null);
}