What is JSON Serialization in ASP.NET Core?

JSON Serialization in ASP.NET Core allows developers to convert C# objects into JSON for API responses and deserialize JSON back to objects for processing requests. It is essential for building RESTful APIs and exchanging data between client and server.

Key Features:

• Converts objects to JSON and JSON to objects
• Uses System.Text.Json by default
• Supports custom serialization options
• Handles complex objects and collections
• Essential for Web API development

Example:
Serializing an object to JSON:

var product = new Product { Id = 1, Name = "Laptop" };
var json = JsonSerializer.Serialize(product);

Deserializing JSON to an object:

var json = "{\"Id\":1,\"Name\":\"Laptop\"}";
var product = JsonSerializer.Deserialize<Product>(json);

Controller returning JSON in a Web API:

[HttpGet]
public IActionResult GetProduct()
{
    var product = new Product { Id = 1, Name = "Laptop" };
    return new JsonResult(product);
}

JSON Serialization in ASP.NET Core enables smooth data exchange between servers, clients, and APIs efficiently.

Citations:

• Learn more on Savanka
• Official ASP.NET Core Documentation