public async Task <IActionResult> PutClassInfo(int pk, qa_class classInfo)
        {
            if (pk != classInfo.qa_class_pk)
            {
                return(BadRequest());
            }

            _context.Entry(classInfo).State = EntityState.Modified;
            await _context.SaveChangesAsync();

            return(NoContent());
        }
        public async Task <ActionResult <qa_questions> > PostClassInfo(qa_class classInfo)
        {
            _context.Qa_class.Add(classInfo);
            await _context.SaveChangesAsync();

            //return CreatedAtAction(nameof(GetStudentInfo), new
            //{
            //  qa_users_name = studentInfo.qa_users_name,
            //  qa_users_pass = studentInfo.qa_users_pass,
            //  qa_users_email = studentInfo.qa_users_email,
            //  qa_users_score = studentInfo.qa_users_score
            //}, studentInfo);

            return(CreatedAtAction("GetClassesInfo", classInfo, null));
        }