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  • Book Overview & Buying Mastering Minimal APIs in ASP.NET Core
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Mastering Minimal APIs in ASP.NET Core

Mastering Minimal APIs in ASP.NET Core

By : Andrea Tosato, Marco Minerva, Emanuele Bartolesi
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Mastering Minimal APIs in ASP.NET Core

Mastering Minimal APIs in ASP.NET Core

5 (1)
By: Andrea Tosato, Marco Minerva, Emanuele Bartolesi

Overview of this book

The Minimal APIs feature, introduced in .NET 6, is the answer to code complexity and rising dependencies in creating even the simplest of APIs. Minimal APIs facilitate API development using compact code syntax and help you develop web APIs quickly. This practical guide explores Minimal APIs end-to-end and helps you take advantage of its features and benefits for your ASP.NET Core projects. The chapters in this book will help you speed up your development process by writing less code and maintaining fewer files using Minimal APIs. You’ll also learn how to enable Swagger for API documentation along with CORS and handle application errors. The book even promotes ideas to structure your code in a better way using the dependency injection library in .NET. Finally, you'll learn about performance and benchmarking improvements for your apps. By the end of this book, you’ll be able to fully leverage new features in .NET 6 for API development and explore how Minimal APIs are an evolution over classical web API development in ASP.NET Core.
Table of Contents (16 chapters)
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1
Part 1: Introduction
5
Part 2: What’s New in .NET 6?
10
Part 3: Advanced Development and Microservices Concepts

Exploring responses

As with controller-based projects, with route handlers of minimal APIs as well, we can directly return a string or a class (either synchronously or asynchronously):

  • If we return a string (as in the examples of the previous section), the framework writes the string directly to the response, setting its content type to text/plain and the status code to 200 OK
  • If we use a class, the object is serialized into the JSON format and sent to the response with the application/json content type and a 200 OK status code

However, in a real application, we typically need to control the response type and the status code. In this case, we can use the static Results class, which allows us to return an instance of the IResult interface, which in minimal APIs acts how IActionResult does for controllers. For instance, we can use it to return a 201 Created response rather than a 400 Bad Request or a 404 Not Found message. L et’s look at some examples:

app...
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