CODEWITHSUNDEEP
c#asp.netjsonwcf
Jenninha
Jenninha

Reputation: 1377

WCF service returning object in Json format

I have a WCF service and I am building an object called FinalList that contains an Object called Chart and a List<Data>. I want to return to my ajax function json data in the format below:

{"d":{"chart":{"caption":"Year","exportatclient":"1","exportenabled":"1","exporthandler":"chartExporter","labelDisplay":"wrap","numberprefix":"","showborder":"1","slantLabels":"1","useroundedges":null,"yaxisname":"Number of hits"},"data":[{"label":"1960s","link":null,"tooltext":null,"value":3},{"label":"1970s","link":null,"tooltext":null,"value":56},{"label":"1980s","link":null,"tooltext":null,"value":98}]}}

However my Service is returning like this:

{"d":{"__type":"FinalList:#MyNamespace.FusionChartsFields","chart":{"__type":"Chart:#MyNamespace.FusionChartsFields","caption":"Year","exportatclient":"1","exportenabled":"1","exporthandler":"chartExporter","labelDisplay":"wrap","numberprefix":"","showborder":"1","slantLabels":"1","useroundedges":null,"yaxisname":"Number of hits"},"data":[{"__type":"Data:#MyNamespace.FusionChartsFields","label":"1960s","link":null,"tooltext":null,"value":3},{"__type":"Data:#MyNamespace.FusionChartsFields","label":"1970s","link":null,"tooltext":null,"value":56},{"__type":"Data:#MyNamespace.FusionChartsFields","label":"1980s","link":null,"tooltext":null,"value":98}]}}

When I used WebServices (asmx) I only needed to declare my class as "object" instead of FinalList, then the results were in the correct json format I need.

I have tried converting it into string and it brings me the correct thing but including '\' (e.g. {"d":{\"chart\":{\"caption\":\"Year\") and that's not what I want.

Does anyone know how I can remove these "__type" and class name?

I am using .Net 4

My FinalList class is as follows:

public class FinalList
    {
        private Chart _chart;
        private List<Data> _data = new List<Data>();

        public Chart chart
        {
            get { return _chart; }
            set { _chart = value; }
        }

        public List<Data> data
        {
            get { return _data; }
            set { _data = value; }
        }
    }

My service contract contains 

[OperationContract]
[WebInvoke(RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]

above its declaration.

Upvotes: 1

Views: 5586

Answers (3)

nealkernohan
nealkernohan

Reputation: 836

Try adding a constructor as below:

public class FinalList
{
    private Chart _chart;
    private List<Data> _data = new List<Data>();

    public Chart chart
    {
        get { return _chart; }
        set { _chart = value; }
    }

    public List<Data> data
    {
        get { return _data; }
        set { _data = value; }
    }

    protected internal FinalList() { }

}

Upvotes: 0

Tiago
Tiago

Reputation: 747

What behaviour are you using for your WCF service? If you are using <enableWebScript /> then switching to <webHttp/> in the service behaviour configuration will solve your problem.

As Cybermaxs said, if you are using an ASP.NET Ajax client then this won't be a problem and you may continue to use <enableWebScript />.

Upvotes: 1

Cybermaxs
Cybermaxs

Reputation: 24556

Basically the result is wrapped in an additional type (presumably to allow for multiple results?) and there's a __type property attached to each object returned. Even simple result values at least include the wrapper type, so even say a string result includes the d: type.

If you're using MS AJAX on the client there's no issue - the client knows how to parse this JSON into a clean object. But if you're using some other mechanism - jQuery or Prototype for example to retrieve a result set you get back a funky object where you have to go result.d.LastName for example, which is ugly.

Try this,

[OperationContract]
[WebInvoke(BodyStyle=WebMessageBodyStyle.WrappedRequest,RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]

Upvotes: 1

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