JavaScriptSerializer on JSON containing an array

Question

There is a similar question with the same title, but the solution is not valid for my problem.

I'm trying to serialize the following JSON:

{"Id":1,
 "Questions":
    [{"Id":"q-1-Q0001","Text":"Volume Too High"},
     {"Id":"q-1-Q0002","Text":"Volume Too Low"}],
 "Text":"My text."}

With this structure in my C#:

public class Issue
{
    public Issue() { Questions = new List<Question>(); }
    public string Id { get; set; }
    public List<Question> Questions { get; set; }
    public string Text { get; set; }
}

public class Question
{
    public string Id { get; set; }
    public string Text { get; set; }
}

I have JavaScript send a POST with the JSON above to this C# function:

public JsonResult AddIssueToQueue(Issue issue)
{
    var id = issue.Id; // Set correctly
    var text = issue.Text; // Set correctly
    var q = issue.Questions; // NOT set correctly. Set to List of two empty Question items.
}

id and text are set correctly, but q is set to a List that contains two empty Question objects (Id and Text are null in each).

Is my JSON formatted incorrectly? Why doesn't the Questions array propagate correctly?

Yes. id and text (issue.Id and issue.Text) hold the correct values. — Paul, Jun 23 '11 at 00:18
I doubt this is it, but when I serialize your Issue class using the JavaScriptSerializer it puts quotes around the 1 for Issue ID, i.e. `{"Id":"1",`. However, I can deserialize with or without the quotes. — rsbarro, Jun 23 '11 at 01:53
The serialization happens automatically. The AddIssueToQueue class is called via `POST` by JavaScript, so I don't know how I'd set parameters. — Paul, Jun 23 '11 at 14:29

score 0 · Answer 1 · answered Aug 07 '11 at 04:29

0

This is a just a wild guess, but your JSON structure has an ID with an integer, as rsbarro mentioned above. But your proxy class in C# is expecting a string - is it possible the type conversion is getting mixed up there?

answered Aug 07 '11 at 04:29

Justin Beckwith

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score 0 · Answer 2 · answered Aug 07 '11 at 05:28

This my ajax call and it is working fine I am getting the question List

   $.ajax({
                type: 'POST',
            contentType: 'application/json; charset=utf-8',
            data: "{'issue':{'Id':1,'Questions':[{'Id':'q-1-Q0001','Text':'Volume Too High'},{'Id':'q-1-Q0002','Text':'Volume Too Low'}],'Text':'My text.'}}" ,

            dataType: 'html',
            url: 'AddIssueToQueue',
            success: function (data) {
                if (data) {
                    //Do something 
                }
            }
        });

Can you share your code as well.

JavaScriptSerializer on JSON containing an array

2 Answers2