How to convert an Object to JSON in C#?

Question

Ravi Vishwakarma · Answer

You can convert an object to JSON using the built-in System.Text.Json or
Newtonsoft.Json (also known as JSON.NET) libraries. Both libraries provide methods to serialize C# objects into
JSON format.
Here's how you can do it using both libraries:
Using ‘System.Text.JSON’
using System.Text.JSON;
using System;
namespace ConsoleApplication1
{
   public class ObjectToJSON
   {
       public static void Main(string[] args)
       {
           ObjectToJSON.Convert();
           Console.ReadLine();
       }
       public static string Convert()
       {
           // Define an object
           var obj = new
           {
               Name = "John",
               Age = 30,
               IsStudent = true
           };
           // Serialize the object to JSON
           string json = JsonSerializer.Serialize(obj);
           // Output the JSON
           Console.WriteLine(json);
           return json;
       }
   }
}
and 
Using ‘Newtonsoft.Json’
using Newtonsoft.Json;
using System;
namespace ConsoleApplication1
{
   public class ObjectToJSON
   {
       public static void Main(string[] args)
       {
           ObjectToJSON.Convert();
           Console.ReadLine();
       }
       public static string Convert()
       {
           // Define an object
           var obj = new
           {
               Name = "John",
               Age = 30,
               IsStudent = true
           };
           // Serialize the object to JSON
           string json = JsonConvert.SerializeObject(obj);
           // Output the JSON
           Console.WriteLine(json);
           return json;
       }
   }
}
Explanation
In both examples, an anonymous type is used to define the object to be serialized. You can change it with any custom class or object you want to convert to JSON.JsonSerializer.Serialize method (from System.Text.Json) or
JsonConvert.SerializeObject method (from Newtonsoft.Json) is used to convert the object to JSON format.The resulting JSON string is then printed to the console.
Library Selection
System.Text.Json is part of the .NET Core and .NET 5+ frameworks, and it provides high-performance JSON parsing and serialization.Newtonsoft.Json (JSON.NET) is a popular third-party library with extensive features and flexibility. It has been widely used in the .NET ecosystem for many years and provides excellent support for various scenarios.

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How to convert an Object to JSON in C#?

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