JSON in C#

System.Text.Json is the modern built-in JSON library for C#.

Key points

System.Text.Json is the modern built-in JSON library for C#.

Parse JSON

using System.Text.Json;
User user = JsonSerializer.Deserialize<User>(text);

Stringify JSON

string text = JsonSerializer.Serialize(user, new JsonSerializerOptions { WriteIndented = true });

Validate JSON

try {
  using JsonDocument doc = JsonDocument.Parse(text);
} catch (JsonException ex) {
  Console.WriteLine(ex.Message);
}