ASP.NET Core in Action, Third Edition

7 Model binding and validation in minimal APIs

This chapter covers

• Using request values to create binding models
• Customizing the model-binding process
• Validating user input using DataAnnotations attributes

In chapter 6 I showed you how to define a route with parameters—perhaps for the unique ID for a product API. But say a client sends a request to the product API. What then? How do you access the values provided in the request and read the JavaScript Object Notation (JSON) in the request body?

For most of this chapter, in sections 7.1-7.9, we’ll look at model binding and how it simplifies reading data from a request in minimal APIs. You’ll see how to take the data posted in the request body or in the URL and bind it to C# objects, which are ...