Add model binding in an ASP.NET Core Web API

Published: Saturday 26 August 2023

Model binding in an ASP.NET Core Web API or MVC app allows us to bind a model based on a source.

This can be through the query string, a form value, or a header value.

In an API controller, we can use the [FromHeader] attribute to bind a parameter to a HTTP request header value in an action.

In the example below, how can we add the [FromHeader] attribute so the authorization parameter binds to the Authorization header in the HTTP request? 

[ApiController, Route("api/my-data")]
public class MyDataController : Controller
	public string? MyData(string? authorization)
		return authorization;

To help you out, you can learn more about ASP.NET Core model binding by watching our video: