How deeply does ASP.NET Core in Action, 3e cover TagHelper?

Explains derivation, naming, attributes, encoding, and Process rendering, but stops short of broader component architecture.

TagHelper

As explained in ASP.NET Core in Action, 3e

TagHelper is the ASP.NET Core base class from which custom Tag Helper components derive.

TagHelper is the ASP.NET Core base class for custom Tag Helper components. Derive a class from it and override Process or ProcessAsync to describe how the component renders itself. section 32.1.1

System information element

A class named SystemInfoTagHelper is invoked from Razor with <system-info>. By convention, the class name loses the TagHelper suffix and becomes kebab-case. The component can render a div, expose boolean attributes such as add-machine and add-os, and HTML-encode output before writing it to the page. section 32.1.1

How ASP.NET Core in Action, 3e covers it

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Related concepts

Order propertyimplements · An order property specifies the relative sequence, precedence, or position of elements, events, or operations.
TagHelperContextused by · TagHelperContext is an ASP.NET Core object that provides information and shared state for a tag helper during processing of an element.

This explainer was generated by Manning's knowledge graph from the text of ASP.NET Core in Action, 3e. The section links point to the parts of the book it draws on.