Getting C# Object Property Values with jQuery JSON

Question

So I have this:

{"d":[{"__type":"Like","Id":345,"Sender":"JohnSmith","SourceId":338,"DateTime":"\/Date(1321057654000)\/","FromStream":true}]}

And this:

        function LikesSuccess(result, userContext, methodName) {
            for (var key in result) {
                alert(key.Sender);
            }
        }

JSON returns an array of type "Like" with the properties shown above. Is there another way of getting "JohnSmith" from Sender? Because this returns undefined.

Thanks.

Jim H. · Accepted Answer · 2011-11-12 03:26:33Z

2

Try

for (var i = 0; i < result.d.length; i++) {
    alert(result.d[i].Sender);
}

because your JSON object has the key d. >> jsfiddle

answered Nov 12, 2011 at 3:26

Jim H.

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3 Comments

user1027620 Over a year ago

Yes, this resolves the issue. One question, where did that "d" come from? Does ASP.NET automatically assign it? I did not specify it anywhere in my ScriptMethod.

Jim H. Over a year ago

It was a change added with .NET 3.5 for security reasons. See encosia.com/a-breaking-change-between-versions-of-aspnet-ajax

lsuarez Over a year ago

@user1027620: Check out this article from Encosia about the security reasons behind Microsoft's encapsulation of return objects under the d property.

ComfortablyNumb · Accepted Answer · 2011-11-12 03:23:31Z

0

use jquery

var obj = $.parseJSON(str)

Then you get the js object

answered Nov 12, 2011 at 3:23

ComfortablyNumb

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1 Comment

Jim H. Over a year ago

His example is already an object, not a string which needs to be parsed.

Pawan Mishra · Accepted Answer · 2011-11-12 03:25:21Z

0

Try this code :

function LikesSuccess(result, userContext, methodName) {
            for (var property in result.Properties) {
                alert(result[property]);
            }
        }

I remember having used something similar, when I was working with Asp.Net Ajax, web services. Not sure about the correct syntax though.

answered Nov 12, 2011 at 3:25

Pawan Mishra

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