How can use ajax in asp.net mvc core?

Question

I have used jquery ajax twice in a single view. The first works fine, but the second sends the zero value as the input parameter to the corresponding action,I don't know why?

<tr>
     <th>(@((int)ViewBag.BoonCount))</th>
         <td class="text-right">
             <input onchange="SetBoon()" class="form-control" type="number" name="Boon" id="MBoon" min="0" max="@((int)ViewBag.BoonCount)" value="" />
              <script>
               function SetBoon() {
                    var BoonVal = $('#MBoon').val();

                     $.ajax({
                            url: '/Users/SetBoon',
                            method: 'post',
                            contentType: 'json',
                            data: { fID: '@Factor.ID', BValue: BoonVal }
                          });

                    }
             </script>
          </td>

and it is my action code:

public string SetBoon(int fID, int BValue){}

The action receives zero as the input parameter.I even tested the @Factor.ID before entering the SetBoon function and had a valid value.

you're sending factorID as a string and not an int. Remove the single quotes, i.e. data: { fID: @Factor.ID, BValue: BoonVal } — ADyson
– ADyson, Commented Aug 16, 2017 at 8:59
Well, what is the value of Factor.ID when the page is first rendered? What value are you expecting? You should be able to see from your rendered page source what it's passing. Does BValue get populated correctly? — ADyson
– ADyson, Commented Aug 16, 2017 at 9:22

Babak irannezhad · Accepted Answer · 2017-08-16 10:43:55Z

1

I must replace contentType by dataType in the ajax,if I remove contentType in the amount returned from the action to the view I encountered with another error.

answered Aug 16, 2017 at 10:43

Babak irannezhad

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Comments

statler · Accepted Answer · 2017-09-24 13:19:33Z

0

json is not a contentType. It is a dataType for the response. If you want to specify the request data type, use

contentType: 'application/json'

answered Sep 24, 2017 at 13:19

statler

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