29 Mar 2021

Automatic class creation for unmarshalling JSON

If you’re working with JSON, say for REST web services, and you don’t have the class to unmarshal the response, Visual Studio can automatically generate the class for you:

Open your Visual Studio Project and create a class file. Delete the contents:
Copy the JSON text string you will need to unmarshall onto the clipboard. Take this example from the JSON Placeholder mock API:

{
	"userId": 1,
	"id": 1,
	"title": "delectus aut autem",
	"completed": false
}

Go to Edit > Paste Special > Paste JSON as Classes:

The result is a class named “Rootobject” that you can use to unmarshall the information on your code.