public JsonResult <String> Post([FromBody] FormDataCollection _klantVars)
        {
            String succesMessage = "Insert gelukt";
            String strInsertM    = "";

            String naam  = _klantVars.GetValues("naam")[0];
            String pwd   = _klantVars.GetValues("pwd")[0];
            String email = _klantVars.GetValues("email")[0];

            // Check if values are empty...
            if (locUtil.isEmpty(naam) && locUtil.isEmpty(pwd) && locUtil.isEmpty(email))
            {
                return(Json("[{ \"message\" :\" " + "empty values" + "\"}]"));
            }

            try
            {
                strInsertM = this.klantDao.insert(new Klant(
                                                      0,
                                                      naam,
                                                      pwd,
                                                      email
                                                      ),
                                                  succesMessage
                                                  );
            }
            catch (NullReferenceException ee)
            {
                return(Json("{" + ee.ToString() + "}"));
            }

            return(Json("[{ \"message\" :\" " + strInsertM + "\"}]")); // Empty Json
        }