System.Text.Json.Extensions

Some extensions to the JsonStringEnumConverter which supports attributes like EnumMember, Display and Description

Info

Build Azure
NuGet
MyGet (preview)

Installing

You can install from NuGet using the following command in the package manager window:

Install-Package EnumExtensions.System.Text.Json

Or via the Visual Studio NuGet package manager.

If you use the dotnet command:

dotnet add package EnumExtensions.System.Text.Json

Option 1: Usage Example - EnumMember

Define Enum and add attributes

Define an Enum and annotate the Enum fields with the EnumMemberAttribute:

enum WeatherType
{
    [EnumMember(Value = "Zonnig")]
    Sunny,

    [EnumMember(Value = "Helder")]
    Clear
}

Add Converter

Add the new JsonStringEnumConverterWithAttributeSupport to the Converters via the JsonSerializerOptions:

var options = new JsonSerializerOptions();
options.Converters.Add(new JsonStringEnumConverterWithAttributeSupport());

Serialize an object

var weatherForecast = new WeatherForecast
{
    WeatherType = WeatherType.Sunny
};

var weatherForecastSerialized = JsonSerializer.Serialize(weatherForecast, options);
Console.WriteLine(weatherForecastSerialized); // {"WeatherType":"Zonnig"}

Deserialize an object

Deserialize works by using the same options:

var json = "{\"WeatherType\":\"Zonnig\"}";
var weatherForecastDeserialized = JsonSerializer.Deserialize<WeatherForecast>(json, options);

Option 2: Usage Example - EnumMember

It's also possible to annotate the Enum with a [JsonConverter] so that you don't need to manually registerd the JsonStringEnumConverterWithAttributeSupport to the Converters via the JsonSerializerOptions.

Define Enum and add attributes

Define an Enum

• add the [JsonConverter(typeof(JsonStringEnumConverterWithAttributeSupport))] to the Enum
• annotate the Enum fields with the EnumMemberAttribute:

[JsonConverter(typeof(JsonStringEnumConverterWithAttributeSupport))]
enum WeatherType
{
    [EnumMember(Value = "Zonnig")]
    Sunny,

    [EnumMember(Value = "Helder")]
    Clear
}

Serializing and Deserialize an object

This works the same as using Option 1.

Note that only Enum values which are annotated with EnumMember are supported.

Usage Example - Display and Description

It's also possible to annotate Enum fields with these attributes:

• DisplayAttribute
• DescriptionAttribute

Define Enum and add attributes

enum WeatherType
{
    [EnumMember(Value = "Zonnig")]
    Sunny,

    [Display(Name = "Helder")]
    Clear,

    [Description("Bewolkt")]
    Cloudy
}

Add Converter

! By default, the Display and Description are disabled, use the following line to enable these.

var options = new JsonSerializerOptions();
options.Converters.Add(new JsonStringEnumConverterWithAttributeSupport(null, true, true, true, true));

Serializing and Deserializing works the same.