Youll need to have all these Dlls.

How to install system.text.json. Add JsonFSharpConverter to the converters in JsonSerializerOptions and the format will be applied to all F types. You have to install the NuGet package MicrosoftExtensionsConfigurationJson in your project to include the SystemTextJsonJsonSerializer to your project which can be used to convert objects to JSON and vice-versa. DefaultJsonSerializer is a serializer based on SystemTextJson.

If your project is targetingNET Core 3x orNET Framework or if youre writing aNET Standard compatible library install the latest SystemTextJson. Provides high-performance low-allocating and standards-compliant capabilities to process JavaScript Object Notation JSON which includes serializing objects to JSON text and deserializing JSON text to objects with UTF-8 support built-in. Dotnet add package SystemJson --version 471 For projects that support PackageReference copy this XML node into the project file to reference the package.

This gives you SystemTextJson right out of the box without any other pre-requisites. Gather the required DLL of SystemTextJson with the right version using NuGet online website then decompress the nuget package with 7Zip for example. Use the 500 version of SystemTextJson.

It also provides types to read and write JSON text encoded as UTF-8 and to create an in-memory document object model DOM for random access of the JSON. JsonContentCreate Method SystemNetHttpJson Creates a new instance of the JsonContent class that will contain the inputValue serialized as JSON. Open SystemTextJson open SystemTextJsonSerialization let options JsonSerializerOptions optionsConvertersAdd JsonFSharpConverter JsonSerializerSerialize x Hello.

For NET 6 Preview 7 SDK and later with projects that target NET 6 or later theres no need to install the SystemTextJson NuGet package because source generation is included in the runtime. Public void ConfigureServicesIServiceCollection services servicesAddMvc. Install the package via Nuget Install-Package EasyCachingSerializationSystemTextJson Configuration public class Startup others.

This article shows how to migrate from NewtonsoftJson to SystemTextJson. The SystemTextJson namespace provides functionality for serializing to and deserializing from JavaScript Object Notation JSON. In all the above scenarios adding the AddNewtonsoftJson call to the end means that were going to use the NewtonsoftJson APIs over the default SystemTextJson implementation.