What is Web API in ASP.NET Core? See Example

ASP.NET Core Web API allows developers to build RESTful services that can be consumed by web apps, mobile apps, or other clients. It uses HTTP methods like GET, POST, PUT, and DELETE to perform CRUD operations. Web API is lightweight, cross-platform, and integrates seamlessly with ASP.NET Core applications.

Key Features:

• Build RESTful HTTP services
• Supports JSON, XML, and custom formats
• Cross-platform and high performance
• Integrates with Entity Framework Core for database operations
• Easy routing and model binding

Example:
A simple Web API controller:

[ApiController]
[Route("api/[controller]")]
public class ProductsController : ControllerBase
{
    [HttpGet]
    public IActionResult GetProducts()
    {
        var products = new List<string> { "Laptop", "Mobile", "Tablet" };
        return Ok(products);
    }
}

ASP.NET Core Web API is ideal for building backend services for web and mobile applications with scalable and maintainable code.

Citations:

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