I am trying as the title says to return a Json message from the Controller to the View after it validates.

I have made a breakpoint, and I know that the code works from Controller side, and that my JavaScript calls with success the ActionResult now. How do I display that message in the View?

There are two buttons, stamp in and stamp out. If the user stamps in twice, it should get a message, same with stamp out. I have two ActionResults who are indentical except some message and string changes.

Controller:

[HttpPost]

    public ActionResult CreateStamp(Stamping stampingmodel)

    {

        var validateMsg = ;

        stampingmodel.Timestamp = DateTime.Now;

        stampingmodel.StampingType = in;



        if (stampingmodel.User == null || ModelState.IsValid)

        {

            var idValidated = db.Users.Find(model.UserId);



            if (idValidated != null)

            {

                var stamp =

                    db.Stampings.Where(s => s.UserId == stampingmodel.UserId)

                        .OrderByDescending(s => s.Timestamp)

                        .FirstOrDefault();



                if (stamp.StampingType == stampingmodel.StampingType)

                {

                    if (stampingmodel.StampingType == in)

                    {

                        validateMsg = Stamped Twice In A Row!;

                    }

                }



                else

                {

                    if (stampingmodel.StampingType == in)

                    {

                        validateMsg = Stamped In, Welcome.;

                    }

                }

            }



            db.Stampings.Add(stampingmodel);

            db.SaveChanges();

        }



        return Json(new {Message = validateMsg });

JavaScript:

$(document).ready(function () {



$(#stampInBtn).click(function () {



    var userId = $(#userId).val();



    $.ajax({

        url: ComeAndGo/CreateStamp,

        type: POST,

        dataType: json,

        data: {

            userId: userId,

        }

    });



});

View:

    <input type=text id=idUser class=form-control />

    <br />

    <input type=submit value=IN id=stampInBtn />

I have more code inside the View of course; divs, head, body, title and scripts. But it's perhaps a little irrelevant.

What should I do to successfully show those messages?

Regards.