Using custom Guid in JSON

main.cs

using System;
using System.Linq;
using ServiceStack;
using ServiceStack.Text;

JsConfig<Guid>.SerializeFn = guid => guid.ToString();

public partial class Dto
{
    public Guid Guid { get; set; } = Guid.NewGuid();
}

var dto = new Dto {};
var json = dto.ToJson();
json.Print();

packages.config

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="System.Memory" version="4.5.3" targetFramework="net45" />
  <package id="ServiceStack.Text" version="5.8.0" targetFramework="net45" />
  <package id="ServiceStack.Client" version="5.8.0" targetFramework="net45" />
  <package id="ServiceStack.Interfaces" version="5.8.0" targetFramework="net45" />
</packages>