Get a string from JsonElement via RestClient

A useful code snippet on how to get a string from and endpoint (REST client) via JSON data.

We create a RestClient with the desired url, and add the method specific required headers. The response is processed to get JasonElement data, where a string can be extracted from an object property.

//Get access token from auth code
var clientAT = new RestClient(SettingSingleService.CognitoSettings.TokenUrl);
clientAT.Timeout = -1;
var requestAT = new RestRequest(Method.POST);
requestAT.AddHeader("Content-Type", "application/x-www-form-urlencoded");
requestAT.AddParameter("grant_type", "authorization_code");
requestAT.AddParameter("client_id", SettingSingleService.CognitoSettings.ClientId);
requestAT.AddParameter("redirect_uri", SettingSingleService.CognitoSettings.RedirectUri);
requestAT.AddParameter("code", code);
requestAT.AddParameter("client_secret", SettingSingleService.CognitoSettings.ClientSecret);
JsonElement dataAT = ProcessRestResponse(clientAT, requestAT);

var accessToken = dataAT.GetProperty("access_token").ToString();

ProcessRestResponse private function:

private JsonElement ProcessRestResponse(RestClient client, RestRequest request)
{
    IRestResponse response = client.Execute(request);
    JsonDocument doc = JsonDocument.Parse(response.Content);
    return doc.RootElement;
}

Notes:

A REST (Representational State Transfer) client is a tool or library used for making HTTP requests and interacting with RESTful web services. These clients allow developers to easily perform CRUD (Create, Read, Update, and Delete) operations, retrieve API data, and manipulate it as required.