This sample writes LINQ to JSON objects to a file.
var videogameRatings = new JObject(
new JProperty("Halo", 9),
new JProperty("Starcraft", 9),
new JProperty("Call of Duty", 7.5));
File.WriteAllText(@"c:\videogames.json", videogameRatings.ToString());
// write JSON directly to a file
using var file = File.CreateText(@"c:\videogames.json");
using var writer = new JsonTextWriter(file);
videogameRatings.WriteTo(writer);