public IHttpActionResult Post()
        {
            var httpRequest = HttpContext.Current.Request;


            string fileName = null;

            //var  = httpRequest.Params["naam"];
            //var collection = httpRequest.Params["studentNumber"];

            try
            {
                fileName = httpRequest.Files[0].FileName;
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                return(BadRequest("Could not be uploaded:" + e.Message));
            }


            if (!fileName.IsEmpty())
            {
                HttpPostedFile postedFile       = httpRequest.Files[0];
                int            postedFileLength = postedFile.ContentLength;
                byte[]         input            = new byte[postedFileLength];

                Stream mystream = postedFile.InputStream;
                mystream.Read(input, 0, postedFileLength);


                Exam exam = new Exam();
                exam.Bytes = input;
                string hash = MD5Hasher.CalculateHash(input);
                exam.Md5 = hash;

                exam = _examRepo.AddExam(exam);

                Student student = new Student();
                student.Name          = httpRequest.Params["naam"];
                student.FirstName     = "demo";
                student.ExamenHash    = hash;
                student.StudentNumber = httpRequest.Params["studentNumber"];
                student.Datetime      = DateTime.Now.ToString();
                student.FileName      = "webExamen.zip";
                student.ExamenId      = exam.Id;


                _studentRepo.AddStudent(student);
                //return Ok($"File {fileName} Uploaded");
                return(Ok(hash));
            }

            return(BadRequest("Could not be uploaded"));
        }