ASP.NET MVC Ajax Form OnFailure never called!

Question

The Ajax request is as follows:

In the controller action method I tried to add ModelState Error as well as throw an exception but response is never calling OnFailure. It always calls the OnSuccess regardless of response. May be I missing somthing here.

The question: When is it going to call the OnFailure js method? Any samples will be greatly appreciated.

Thanks

dso · Accepted Answer · 2009-05-21T16:42:58.243

12

You need to return an HTTP error status code from your action. E.g. 400, 404, 500.

try something like this:

throw new HttpException(404, "Not Found");

edited May 21 '09 at 16:42

answered May 21 '09 at 16:36

dso

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The answer listed above should work. You can check my question [here](http://stackoverflow.com/a/37332246/4896260) which gives a bit more detail. – usr4896260 Jun 10 '16 at 14:15

score 0 · Answer 2 · answered Jan 18 '16 at 09:18

As per the MSDN definition, OnFailure is called when the HTTP response status is not in the 200 range. For instance if its a permanent Redirect (308), temporary redirect (307) Not Found (404) or Bad Request (400) then the OnFailure method is called. For a full list of HTTP response codes, see this wikipedia article

ASP.NET MVC Ajax Form OnFailure never called!

2 Answers2