using Newtonsoft.Json;
string jsonString = "{\"Name\":\"John\",\"Age\":30,\"City\":\"New York\"}";
var person = JsonConvert.DeserializeObject<dynamic>(jsonString);
string name = person.Name;
int age = person.Age;
string city = person.City;
Console.WriteLine("Name: " + name);
Console.WriteLine("Age: " + age);
Console.WriteLine("City: " + city);