Re: How to serialize an emum to it's member value using DataContractJsonSerializer

johnwsaunders3 — Sun, 05 Jul 2009 02:52:40 GMT

It looks like it should output "New". As an experiment, try that with the DataContrractSerializer, just so we can see if the problem is specific to JSON.

How to serialize an emum to it's member value using DataContractJsonSerializer

auschucky — Thu, 02 Jul 2009 00:06:34 GMT

Hi,

I'm trying to serialize (and deserialize) an enum to it's member value, not an integer. This technique is mentioned in this microsoft article http://msdn.microsoft.com/en-us/library/aa347875.aspx but it dosen't work.

Does anyone know how to do it?

Here is some sample code

    [DataContract]
    public class Car
    {
        [DataMember]
        public string model;
        [DataMember]
        public CarConditionEnum condition;
    }

    [DataContract(Name = "CarCondition")]
    public enum CarConditionEnum
    {
        [EnumMember]
        New,
        [EnumMember]
        Used,
        [EnumMember]
        Rental,
        Broken,
        Stolen
    }

    class Program
    {
        public static string SerialiseJSON<E>(E obj)
        {
            MemoryStream memoryStream = new MemoryStream();
            SerialiseJSON<E>(memoryStream, obj);
            return Encoding.Default.GetString(memoryStream.ToArray());
        }

        public static void SerialiseJSON<E>(Stream stream, E obj)
        {
            DataContractJsonSerializer dataContractJsonSerializer = new DataContractJsonSerializer(typeof(E));
            dataContractJsonSerializer.WriteObject(stream, obj);
        }

        static void Main(string[] args)
        {
            Car car = new Car();
            car.condition = CarConditionEnum.New;
            car.model = "Holden";

            string JSON = SerialiseJSON<Car>(car);
            Console.Write(JSON);
        }
    }

Output is:

{"condition":0,"model":"Holden"}

Expected Output:

{"condition":"New","model":"Holden"}

Thanks,

Auschucky

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Re: How to serialize an emum to it's member value using DataContractJsonSerializer

How to serialize an emum to it's member value using DataContractJsonSerializer