json object is not displaying on ajax requst in .net mvc

Question

i am sending a ajax request to a contrller to get some data.may be it working.but i cant use it in my project? dont know why ?means when i try to alert or use this data it not display .or even not giving me error message.

MAYBE THIS AJAX IS GOING TO DESTROY MY .NET INTEREST.

CONTROLLER CLASS/METHOD=>

[HttpPost]
public JsonResult Getdata(string batchcode)
{
   var studentid = (from a in db.Studentassignbatches
                    where a.batch_code == batchcode
                    select new { a.UserId });
   return Json(studentid,JsonRequestBehavior.AllowGet);
}

AND MY VIEW CODE AND AJAX =>

<script type="text/javascript">
function ShowBatchCode() {
    var batchcode = $('#BatchList').val();
    $.ajax({
        type: 'POST',
        dataType: 'json',
        contentType: 'application/json',
        url: '@Url.Action("Getdata", "Batche")',
        data: JSON.stringify({ batchcode: batchcode }),
        success: function (data) {
            var result = JSON.parse(data);
            result.forEach(function (obj) {
                alert(obj.UserId);
            });
        },
        error: function (result) {
            alert('Something Went Wrong!');
        }
   });
}
</script>

AND HTML=>

<select onchange="ShowBatchCode()" id="BatchList" class="form-control input-lg">
   <option class="pull-left" value="CCNA Security-1">CCNA Security-1</option>
   <option class="pull-left" value="CCNA Security-2">CCNA Security-2</option>
   <option class="pull-left" value="JNCSP-SEC-1">JNCSP-SEC-1</option>
   <option class="pull-left" value="Oracle Database 12c-1">Oracle Database 12c-1</option>
</select>

AND DATABASE=>

AND MY bROWSER INSPECTION RESULT=>

HERE YOU CAN SEE THE ID IS COMING BUT WHY I CANT USE IT... ANY SUGGESSION OR HELP????

why do you use JSON.parse(data)? I think the data is already a JSON object. try alert(data.UserId) in the success callback. — Master Po
– Master Po, Commented May 7, 2017 at 16:37
you already have JSON object. so simply use the data. Check my answer — Agam Banga
– Agam Banga, Commented May 7, 2017 at 16:41

Agam Banga · Accepted Answer · 2017-05-07 16:40:48Z

1

No Need to JSON parse as it is already JSON object

<script type="text/javascript">
function ShowBatchCode() {
    var batchcode = $('#BatchList').val();
    $.ajax({
        type: 'POST',
        dataType: 'json',
        contentType: 'application/json',
        url: '@Url.Action("Getdata", "Batche")',
        data: JSON.stringify({ batchcode: batchcode }),
        success: function (data) {
            data.forEach(function (obj) {
                alert(obj.UserId);
            });
        },
        error: function (result) {
            alert('Something Went Wrong!');
        }
   });
}
</script>

answered May 7, 2017 at 16:40

Agam Banga

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