How to use message box in MVC controller?

Question

I've created a MVC application. User has to register and once it is completed, I'm redirecting him to "thank you" page. However I would like just to show user a pop-up with this message. How can I achieve this?

My code:

[HttpPost]
public ActionResult Enquiry(Enquiry enquiry)
{
    if (ModelState.IsValid)
    {
        dbEntities.Enquiries.AddObject(enquiry);
        dbEntities.SaveChanges();
        enquiry.SendEnquiryEmail(enquiry);

        return RedirectToAction("Thankyou"); 
    }

    return View(enquiry);
}

//redirect to thankyou page
public ActionResult Thankyou()
{
    return View();
}

Reynolds · Accepted Answer · 2012-03-10 15:05:16Z

15

To ensure your 'alert' in your view only shows up when you intend (a redirect from your ThankYou method) and not when somebody accidentally navigates to your 'ThankYou' view

//redirect to thankyou page
public ActionResult Thankyou()
{
    TempData["alertMessage"] = "Whatever you want to alert the user with";
    return View();
}

Then in your "ThankYou" view, this:

   if(null != TempData["alertMessage"])
   {
      <script type="text/javascript">
       alert("@TempData[alertMessage]");
      </script>
   }

This will write out the script as you normally would for any JavaScript. Hope this helps!

answered Mar 10, 2012 at 15:05

Reynolds

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Comments

Dhruv Rangunwala · Accepted Answer · 2014-06-13 20:10:12Z

6

@Reynolds

Your answer is perfect.

In Razor, the following line can be replaced

alert("@TempData[alertMessage]");

by the following

alert('@TempData["alertMessage"]');

PS. Notice the quotes

answered Jun 13, 2014 at 20:10

Dhruv Rangunwala

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2 Comments

Dhruv Rangunwala Over a year ago

Answer is simple. It didn't work for me so I knew it was due to quotes. Once I fixed the quotes, it worked.

Dhruv Rangunwala Over a year ago

We are developers and most importantly, the logic worked so answer seemed genuine to me. I just corrected it to make sure that someone who is learning MVC should not get stuck. I don't understand what you want to prove. If you want me to say you are genius, then so be it. Thanks genius for pointing out the mistake.

vicky · Accepted Answer · 2013-12-13 06:04:41Z

5

in controller use this code

public ActionResult Edit(CoverLetterModel model)
{
    TempData["msg"] = "<script>alert('Change succesfully');</script>";
}

in view use this code

@Html.Raw(TempData["msg"])

answered Dec 13, 2013 at 6:04

vicky

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1 Comment

vicky Over a year ago

simple way to add script on your view page

Tony Ranieri · Accepted Answer · 2012-03-10 21:29:24Z

3

It sounds like you may want to display the "thank you" message box on the view where the user enters the registration data?

If this is the case, you need to AJAX POST to an action, then handle the success/fail message that returns from the action in your client side javascript.

One thing to keep in mind if you do this is you don't want your users to click the "submit" button multiple times so you may want to hide or disable it after the first click and show/enable it on a validation error...

answered Mar 10, 2012 at 21:29

Tony Ranieri

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Comments

LiamB · Accepted Answer · 2012-03-10 12:43:39Z

1

On the web you will need to use Javascript to display a message box. The syntax (To go into your view is in it's simplest form)

Alert("Hello There!");

You cannot call this directly from your controller. Simply put the above code into your ThankYou view.

This is very simply but should give you the concept.

answered Mar 10, 2012 at 12:43

LiamB

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