Getting null from ajax data

Question

I don't understand why in my controller's action I get null as string:

Here is ajax call:

var dict = { "A": "fake1", "B": "fake2" };
var data = { "dictionary": JSON.stringify(dict) };

$.ajax({
    url: '/MyController/MyMethod',
    data: JSON.stringify(data),
    type: 'POST',
    contentType: 'application/json',
    dataType: 'json'
});

And action method:

[HttpPost]
public ActionResult MyMethod( string dictionary )
{
    Dictionary<string, string> usersToNotify = new JavaScriptSerializer().Deserialize<Dictionary<string, string>>( dictionary );
    //...
}

Not sure about asp, but you may need parenthesis around the new JavaScriptSerializer() before trying to access from it — Paul S.
– Paul S., Commented Dec 14, 2015 at 10:27
I wouldn't stringify dict in the data object. Just add dict to data and then stringify the whole lot. — Andy
– Andy, Commented Dec 14, 2015 at 10:29
Why not just have a model with string A and string B and post back to the model? - data: { "A": "fake1", "B": "fake2" } and delete the contentType option — user3559349
– user3559349, Commented Dec 14, 2015 at 10:30
Could you just test to change in the ajax call the data: JSON.stringify(data), to data: data, because you don´t need to stringify the param object name — Jose Rocha
– Jose Rocha, Commented Dec 14, 2015 at 10:33

younes sofiane · Accepted Answer · 2015-12-14 10:49:47Z

0

Have you tried this?

   var dict = { "A": "fake1", "B": "fake2" };
   var data = { "dictionary": JSON.stringify(dict) };

   $.ajax({
   url: '/MyController/MyMethod',
       data: {
        dictionary:data.dictionary
       },
       type: 'POST',
       contentType: 'application/json',
       dataType: 'json'
   });

answered Dec 14, 2015 at 10:49

younes sofiane

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3 Comments

Jose Rocha Over a year ago

dictionary:JSON.stringify(dict) instead of dictionary:data.dictionary

bambi Over a year ago

With this it doesn't find my methdod, doesn't come into it.

younes sofiane Over a year ago

Do you mean that the request is not sent of what?

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