ASP MVC5 to MVC6 conversion - problem with [ComboDataSourceAction]

Not Answered This post has 0 verified answers | 21 Replies | 17 Followers Thread's RSS feed.

Greg Pringle
Points 1,460
Replied On: Wed, Mar 23 2016 1:13 PM Reply

Hi, I am converting my existing working project from MVC5 to MVC6 by creating a new MVC6 project and moving things over bit by bit.

I have run into a strange issue with [ComboDataSourceAction].   In my old MVC5 project it works fine, but in my new project it returns different JSON (just containing the IDs, not the text I want to display):


public ActionResult ClientComboData()


IEnumerable<ClientName> clientNames = GetClientNames();

return View(clientNames);

//return Json(clientNames);


If I swap in the commented out line, it seems to return Json with the names included and display them in the combobox and the drop down list shows them correctly but when I type anything in the autocomplete I get the following error:

Unhandled exception at line 26, column 4876 in http://localhost:62643/ignite ui/js/infragistics.lob.js Unable to get property 'locale' of undefined or null reference

Here is the class it is serializing:

public class ClientName


public int ClientId { get; set; }

public string FileAsName { get; set; }


Here is the content of the JSON when I hit F12 in IE and look at the network traffic.


How can I fix this?

  • Post Points: 170

All Replies

Points 5
Replied On: Sun, Mar 12 2017 9:20 PM Reply

Interesting post! This is really helpful for me. I like it! Thanks for sharing!

- google mail

  • Post Points: 5
Points 5
Replied On: Tue, Apr 18 2017 4:47 AM Reply

hotmail login Thanks for your sharing. 

  • Post Points: 5
Points 5
Replied On: Tue, May 2 2017 1:57 AM Reply

Clear and brief explanation makes understandable. Thank you

Psychologist in Chennai

  • Post Points: 5
Points 5
Replied On: Mon, May 8 2017 11:17 PM Reply

Thank you very much, admin, your are a great man and your work is very grateful I am very impressed your work keep it up dear. DAEMON Tools Lite Serial number

  • Post Points: 5
Points 15
Replied On: Wed, May 31 2017 4:14 AM Reply

{"ClientId":394},{"ClientId":1346},{"ClientId":348},{"ClientId":1565},{"ClientId":552}, hotmail login, hotmail outlook

  • Post Points: 5
Points 5
Replied On: Mon, Jun 5 2017 1:58 PM Reply

Nice one.. Informative! Thank you for the post..
<a href="" rel="nofollow">AWS online Training</a></p>
<a href="" rel="nofollow">Salesforce online Training</a></p>

AWS Online Training

Salesforce Online Training

  • Post Points: 5
Page 2 of 2 (22 items) < Previous 1 2 | RSS