Customize the serialization of a single object in Newtonsoft.Json

Question

Customize the serialization of a single object in Newtonsoft.Json

When comparing hashes of serialized objects on the server and client, it is important for the JSON rendering to be identical on both sides. Currently, there is an issue with a number field being serialized differently in JavaScript and .NET - causing the hashes to not match.

In JavaScript, the number field serializes as "duration": 1, while in .NET it serializes as "duration": 1.0. This discrepancy is leading to mismatched hashes.

How can I get .NET to serialize without adding the trailing zero?

javascript c#json serialization json.net

Answer 1

Answer №1

If you want to customize the format of a float, you can create a custom JsonConverter. It's important to test it with your expected range of values to ensure the formatting is correct.

class CustomFloatConverter : JsonConverter
{
    public override bool CanConvert(Type objectType)
    {
        return (objectType == typeof(float));
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        writer.WriteRawValue(((float)value).ToString("0.########"));
    }

    public override bool CanRead
    {
        get { return false; }
    }

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

Using JsonConvert.SerializeObject with your custom converter is simple:

string json = JsonConvert.SerializeObject(yourObject, new CustomFloatConverter());

Try it out on this Fiddle: https://dotnetfiddle.net/3t6RiR

Answer 2

If you want to customize the format of a float, you can create a custom JsonConverter. It's important to test it with your expected range of values to ensure the formatting is correct.

class CustomFloatConverter : JsonConverter
{
    public override bool CanConvert(Type objectType)
    {
        return (objectType == typeof(float));
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        writer.WriteRawValue(((float)value).ToString("0.########"));
    }

    public override bool CanRead
    {
        get { return false; }
    }

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

Using JsonConvert.SerializeObject with your custom converter is simple:

string json = JsonConvert.SerializeObject(yourObject, new CustomFloatConverter());

Try it out on this Fiddle: https://dotnetfiddle.net/3t6RiR

Customize the serialization of a single object in Newtonsoft.Json

Answer №1

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