Predefined Tag Helpers

ASP.NET Core predefined tag helpers include tag helpers for enhancing links, caching view and page areas, improving image tags, script tags, and specifying different content in development and production. We will describe each of them in a dedicated section.

All predefined tag helpers are defined in the Microsoft.AspNetCore.Mvc.TagHelpers dll that is part of the .NET Core runtime. These tag helpers are automatically added in the _ViewImports.cshtml files that are created in the Views and Pages folders when an ASP.NET Core MVC /ASP.NET Core Pages project is generated either with Visual Studio or with the dotnet .NET Core SDK command-line tool.

The anchor tag helper

We have already seen how the anchor tag helper works in the previous lesson. It is applied on every a tag having an asp-action attribute. Together with the asp-action and asp-controller attributes it may also have other attributes for specifying all parameters of the routing rule. These attributes have names like asp-route-{paramater name}. Thus, for instance, if we are ...