ASP.NET MVC 4, ajax and exception details in JSON

Question

I'm new to ASP.NET and MVC. In my controller I'm throwing ArgumentException on invalid user input. I like the fact that the client is getting some info back in JSON format. But I don't want to send the whole stacktrace, just the exception message (which contains a useful, localized explanation of the error).

How should I go about doing this?

I've seen some Application_Error() and FilterException, but they all seem to be redirecting to a special "error" view, whilst I want to stay on the same page and just print out a dialog with the user-friendly explanation.

score 1 · Accepted Answer · edited May 23 '17 at 12:20

1

Look at this answer ASP.NET MVC Ajax Error handling and also if you need StatusCode:

filterContext.HttpContext.Response.StatusCode = 500;

edited May 23 '17 at 12:20

Community

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answered Oct 04 '12 at 07:12

webdeveloper

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The `OnException` method isn't being called. Is there something I need to configure? Note: I didn't change the controller code. – Howie Oct 04 '12 at 08:10
@Howie You need attribute `[MyErrorHandler]` or global registering, but then you must check request for content type and return json only for `application/json` – webdeveloper Oct 04 '12 at 08:16

score 1 · Answer 2 · answered Apr 12 '13 at 03:35

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HttpContext.Response.StatusCode = 400
return new ContentResult{Content="My custom error"};

In this case ajax will treat response as in error state and you can specify your custom message and get to it from response.responseText property

$.ajax({
 .....
error: function(e){
  alert(e.responseText); // your  error message
}
});

answered Apr 12 '13 at 03:35

odesuk

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I just get "Bad Request" on my IIS server response, but local it's fine! What's happening? – Lazaro Fernandes Lima Suleiman Oct 07 '14 at 18:39

ASP.NET MVC 4, ajax and exception details in JSON

2 Answers2