Question

Using Newton.Json for Json Serializing.
What JsonSerializerSettings to apply ,when I have to Json serialize an object with property as Byte array ,and then to display byte array in Hex format..

For eg

class A
{
  public int X {get;set;}
  public byte[] Y {get;set;}  
}

When I serialize A to json , I do not get value for Y as i have set … Output for byte[] should be in hex

Answer 1

var json = JsonConvert.SerializeObject(new MyTestClass());

public class MyTestClass
{
    public string s = "iiiii";

    [JsonConverter(typeof(ByteArrayConvertor))]
    public byte[] buf = new byte[] {1,2,3,4,5};
}

public class ByteArrayConvertor : Newtonsoft.Json.JsonConverter
{

    public override bool CanConvert(Type objectType)
    {
        return objectType==typeof(byte[]);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        throw new NotImplementedException();
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        byte[] arr = (byte[])value;
        writer.WriteRaw(BitConverter.ToString(arr).Replace("-", ""));
    }
}