[ code snippet ] JsonPropertyConverter.cs

JsonConverter that works with System.Text.Json allows having a string property that will just store the json element string instead of trying to parse the properties into a complex object

#Code Snippet

JsonPropertyConverter.cs

using System;
using System.Text.Json;
using System.Text.Json.Serialization;

public class JsonPropertyConverter : JsonConverter<string>
{
  public override string Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
  {
    using (var jsonDoc = JsonDocument.ParseValue(ref reader))
    {
      return jsonDoc.RootElement.GetRawText();
    }
  }

  public override void Write(Utf8JsonWriter writer, string value, JsonSerializerOptions options)
  {
    using (var jsonDoc = JsonDocument.Parse(value))
    {
      jsonDoc.RootElement.WriteTo(writer);
    }
  }
}

#Sample Usage

This code snippet allows you to parse json that looks something like this

Sample JSON payload

{
  "Name": "Gordon Beeming",
  "Age": 30,
  "CustomProperties": {
    "Profile": "https://beeming.dev/",
    "Twitter": "https://twitter.com/GordonBeeming",
    "GitHub": "https://github.com/Gordon-Beeming",
    "LinkedIn": "https://www.linkedin.com/in/gordon-beeming/"
  }
}

into a C# model that looks like this

User.cs

using System.Text.Json.Serialization;
// using MyNamespace.JsonConverters;

public class User
{
  public string Name { get; set; }
  public int Age { get; set; }

  [JsonConverter(typeof(JsonPropertyConverter))]
  public string CustomProperties { get; set; }
}

This is great for if you are loading dynamic json based off another property in the model

#Learn More

JsonConverterAttribute

How to write custom converters for JSON serialization (marshalling) in .NET

[ code snippet ] JsonPropertyConverter.cs

#Code Snippet

#Sample Usage

#Learn More

The Deceptive Simplicity of Polymorphism in .NET APIs

Visual Studio 2012 – Paste Special Feature