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json.netnugetwcf-restwcf-web-apinuget-package

JSON.NET Serializer for WCF REST Services


I am trying to use the NETFx Json.NET MediaTypeFormatter nuget package to swap out the default DataContractJsonSerializer in my WCF REST service (4.0 framework). I downloaded the package in my project and added the following lines of code in the Global.asax file.

    void Application_Start(object sender, EventArgs e)
    {
        RegisterRoutes();

        // Create Json.Net formatter serializing DateTime using the ISO 8601 format
        var serializerSettings = new JsonSerializerSettings();
        serializerSettings.Converters.Add(new IsoDateTimeConverter());

        var config = HttpHostConfiguration.Create();
        config.Configuration.OperationHandlerFactory.Formatters.Clear();
        config.Configuration.OperationHandlerFactory.Formatters.Insert(0, new JsonNetMediaTypeFormatter(serializerSettings));
    }

But when I run the service it still uses the DataContractJsonSerilizer for serialization. Below is the class I am returning from my service.

[DataContract]
public class SampleItem
{
    [DataMember]
    public int Id { get; set; }

    [DataMember]
    public string StringValue { get; set; }

    [DataMember]
    public DateTime DateTime { get; set; }
}

Below is the response from the service in Fiddler.

enter image description here

You can see that the DateTime is not in ISO format which I have specified in serializerSettings in the above code. This tells me that the JSON.NET serializer is not used for serializing the objects.

Would appreciate any help.


Solution

  • I feel dumb after I figured the answer. Happens at times :). I had to add the config to the RouteTable. Below is the code in Global.asax

    public class Global : HttpApplication
    {
        void Application_Start(object sender, EventArgs e)
        {
            RegisterRoutes();
        }
    
        private void RegisterRoutes()
        {
            // Create Json.Net formatter serializing DateTime using the ISO 8601 format
            var serializerSettings = new JsonSerializerSettings();
            serializerSettings.Converters.Add(new IsoDateTimeConverter());
    
            var config = HttpHostConfiguration.Create().Configuration;
            config.OperationHandlerFactory.Formatters.Clear();
            config.OperationHandlerFactory.Formatters.Insert(0, new JsonNetMediaTypeFormatter(serializerSettings));
    
            var httpServiceFactory = new HttpServiceHostFactory
                                         {
                                             OperationHandlerFactory = config.OperationHandlerFactory,
                                             MessageHandlerFactory = config.MessageHandlerFactory
                                         };
    
            RouteTable.Routes.Add(new ServiceRoute("Service1", httpServiceFactory, typeof(Service1)));
        }
    }
    

    Hope it will help somebody if they happen to run into the same scenario.