Json.net serialize numeric properties as string

by

You can provide your own JsonConverter even for numeric types. I’ve just tried this and it works – it’s quick and dirty, and you almost certainly want to extend it to support other numeric types (long, float, double, decimal etc) but it should get you going:

using System;
using System.Globalization;
using Newtonsoft.Json;

public class Model
{
    public int Count { get; set; }
    public string Text { get; set; }

}

internal sealed class FormatNumbersAsTextConverter : JsonConverter
{
    public override bool CanRead => false;
    public override bool CanWrite => true;
    public override bool CanConvert(Type type) => type == typeof(int);

    public override void WriteJson(
        JsonWriter writer, object value, JsonSerializer serializer)
    {
        int number = (int) value;
        writer.WriteValue(number.ToString(CultureInfo.InvariantCulture));
    }

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

class Program
{
    static void Main(string[] args)
    {
        var model = new Model { Count = 10, Text = "hello" };
        var settings = new JsonSerializerSettings
        { 
            Converters = { new FormatNumbersAsTextConverter() }
        };
        Console.WriteLine(JsonConvert.SerializeObject(model, settings));
    }
}

More Related Contents:

  1. Parse JSON in C#
  2. Create a strongly typed c# object from json object with ID as the name
  3. JSON.Net throws StackOverflowException when using [JsonConvert()]
  4. How to parse huge JSON file as stream in Json.NET?
  5. Searching for a specific JToken by name in a JObject hierarchy
  6. Unexpected character encountered while parsing value
  7. Newtonsoft.JSON cannot convert model with TypeConverter attribute
  8. Parsing JSON Object with variable properties into strongly typed object
  9. How can I deserialize JSON with C#?
  10. Order of serialized fields using JSON.NET
  11. Json.NET serialize object with root name
  12. Set default global json serializer settings
  13. How to deserialize a JSON array into an object using Json.Net?
  14. Why are some members missing when trying to print an object by serializing to JSON?
  15. Cannot deserialize JSON array into type – Json.NET
  16. How to apply indenting serialization only to some properties?
  17. How to apply ObjectCreationHandling.Replace to selected properties when deserializing JSON?
  18. DateTime column type becomes String type after deserializing DataTable
  19. Modify existing object with new partial JSON data using Json.NET
  20. Accessing properties with a dot in their name
  21. Deserialize json object with dynamic items in C#
  22. Json.NET JSONPath query not returning expected results
  23. JSON.NET serialize JObject while ignoring null properties
  24. Deserialize JSON when a value can be an object or an empty array
  25. How do C# classes deal with dollar signs in JSON?
  26. How to convert c# generic list to json using json.net?
  27. JSON Deserialization – String Is Automatically Converted To Int
  28. Json.net rename properties
  29. Newtonsoft JSON for .net is ignoring jsonproperty tags
  30. How to convert JSON to XML or XML to JSON in C#?

Leave a Comment