Customize JSON serialization using Newtonsoft.Json to use camel case on property names and strings for Enum

ToJsonWithCamelCase.cs

/// <summary>
/// Customize JSON serialization using Newtonsoft.Json
/// </summary>
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;
using Newtonsoft.Json.Serialization;

public static class JsonExtensions
{
  public static string ToJson<T>(this T obj, bool includeNull = true)
  {
    var settings = new JsonSerializerSettings
    {
      ContractResolver = new CamelCasePropertyNamesContractResolver(),
      Converters = new JsonConvert[] { new StringEnumConverter() },
      NullValueHandling = includeNull ? NullValueHandling.Include : NullValueHandling.Exclude;
    };
    
    return JsonConvert.SerializeObject(obj, settings);
  }
}