Notify user on exception

Question

I am currently making a client to gather data from a webservice. Sometimes the connection fails and I put a try catch to prevent the page from going to error page. What I would like to do is to show a pop-up on exeption, to tell the user to try again. I know about "alert" on JS, but can't really make it pop without user action (i.e. clicking a button).

Is this the wisest approach? How can I do this?

Thank you

You can add label to your page and if exception is raised, then add some message to the label. — tilda
– tilda, Commented Dec 27, 2013 at 17:34
You can absolutely make an alert pop w/o the user clicking on something. — Paul
– Paul, Commented Dec 27, 2013 at 17:36
If you just add the alert() to the page from server-side code, outside of a JavaScript function, then it will run when the page loads. — David
– David, Commented Dec 27, 2013 at 17:36

zero298 · Accepted Answer · 2013-12-27 17:36:42Z

3

If you really need a popup, you don't have to have a user click a button to get it:

var alertWindow= window.open("", "", "width=200,height=200");
   alertWindow.document.write("I know about: YOUR THING HERE");

However, popups are annoying and I would really suggest that you have a <div> in your main page with an id="exceptionDiv" and then doing something like this:

page.html

<div id="exceptionDiv"></div>

page.js

var exceptionDiv = document.getElementById("exceptionDiv");
exceptionDiv.innerHTML = "I know about: YOUR THING HERE";

answered Dec 27, 2013 at 17:36

zero298

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3 Comments

jkw4703 Over a year ago

This is exactly what I would do. No annoying popup. Just have a div display the error.

seugnimod Over a year ago

Thank you for the answer. I was about to try this approach (which seems to suit me), but I am using .cs code behind, so how can I "getElementById" of an element when I am not using script? Sorry If I'm not very clear, but I'm not that enlightened on this subject. Thank you once again.

seugnimod Over a year ago

Just a heads up. I tried the ViewBag approach and it worked fine. Thank you all.

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