ASP.NET Core in Action, Third Edition

15 Generating responses with page handlers in Razor Pages

This chapter covers

• Selecting which page handler in a Razor Page to invoke for a request
• Returning an IActionResult from a page handler
• Handling status code errors with StatusCodePagesMiddleware

In chapter 14 you learned how the routing system selects a Razor Page to execute based on its associated route template and the request URL, but each Razor Page can have multiple page handlers. In this chapter you’ll learn all about page handlers, their responsibilities, and how a single Razor Page selects which handler to execute for a request.

In section 15.3 we look at some of the ways of retrieving values from an HTTP request in a page handler. Much like minimal APIs, page handlers can accept ...