Trying to return asp.net mvc JSONResult with VB.Net

Question

I'm trying to return a record from LINQ2SQL as a JsonResult to update my view page via jquery ajax. I'll post my code below. When I follow it through the debugger my function in the controller is being called and it is returning a record. I think there might be something wrong with my Jquery to retrieve the JSONResult. Any ideas?

View:

<a href="#" onclick="getProject(<%=project.ID%>)"><img src="<%=project.ThumbPath%>" alt="<%=project.Title%>" /></a>

Controller:

   Function DisplayProjectAjax(ByVal id As Integer) As JsonResult
        Dim project = From p In db.Projects Where p.ID = id
        Return Json(project)
    End Function

Jquery:

<script type="text/javascript">
    function getProject(id) {
        $(document).ready(function() {
            $.getJSON("/Portfolio/DisplayProjectAjax/" + id,
          {},
          function(data) {
              $("#Title").Text(data.Title);
          });
        }); 
    }

Siddharth Rout · Accepted Answer · 2012-06-10 04:23:08Z

2

Try:

$("#Title").text(data.Title);

or

$("#Title").html(data.Title);

Notice the casing... Also, something like Firebug will be helpful. You can look in the Net and Console tab and see all your requests, as well as debug your Javascript pretty easily.

edited Jun 10, 2012 at 4:23

Siddharth Rout

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answered Jan 15, 2009 at 2:13

JD Conley

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1 Comment

Jon Over a year ago

I tried both of the suggestions and it's still not updating. I also checked Firebug and the response is the proper JSON. The #Title element is an <h3>. Any other suggestions? Thanks for your help.

tvanfosson · Accepted Answer · 2009-01-15 03:56:27Z

1

The result of your query is an IEnumerable which is probably serialized as an array of Project objects even though there is only one. My VB syntax is probably bad but select the First() of the objects chosen by the selection.

return JsonResult( person.First() );

You'll need @JD Conley's fix as well, I think.

answered Jan 15, 2009 at 3:56

tvanfosson

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1 Comment

Jon Over a year ago

I'll give it a shot when I get home tonight. I did try return JsonResult(person.Single()) and that didn't work, I'll for sure give this a try though, thanks!

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