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ASP.NET Core 9 Web API Cookbook

ASP.NET Core 9 Web API Cookbook

By : Luke Avedon, Garry Cabrera
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ASP.NET Core 9 Web API Cookbook

ASP.NET Core 9 Web API Cookbook

5 (1)
By: Luke Avedon, Garry Cabrera

Overview of this book

Discover what makes ASP.NET Core 9 a powerful and versatile framework for building modern web APIs that are both scalable and secure. This comprehensive, recipe-based guide leverages the authors’ decade-long experience in software development to equip developers with the knowledge to create robust web API solutions using the framework's most powerful features. Designed for intermediate to advanced .NET developers, this cookbook contains hands-on recipes that demonstrate how to efficiently build, optimize, and secure APIs using this cutting-edge technology. You'll master essential topics, such as creating RESTful APIs, implementing advanced data access strategies, securing your APIs, creating custom middleware, and enhancing your logging capabilities. The book goes beyond traditional API development by introducing GraphQL, SignalR, and gRPC, offering insights into how these technologies can extend the reach of your APIs. To prepare you for real-world challenges, the recipes cover testing methodologies, cloud deployment, legacy system integration, and advanced concepts like microservices and Hangfire. By the end of this book, you’ll gain the expertise needed to build and manage enterprise-grade web APIs with ASP.NET Core 9. *Email sign-up and proof of purchase required
Table of Contents (14 chapters)
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Model validation with data annotations

We will start by exploring the simplest form of model validation in ASP.NET Core – model validation using data annotations.

Data annotations allow you to decorate model properties with attributes that specify validation criteria. This ensures that the data received from the user adheres to defined rules and formats, preventing invalid data from causing errors or inconsistencies. By utilizing data annotations, we can also provide more specific feedback when a client POSTs data that does not conform to the model’s properties. This technique is a lot better than returning a vague generic error message to the client. Instead of returning a generic error, this approach guides the client on what properties need to be modified to meet the required criteria.

In this recipe, we will use DataAnnotations to apply model validation. The starter project for this chapter is a Web API with two controllers. Both controllers have one endpoint...

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