Learning ASP.NET Core MVC Programming

View components

View components are a new feature introduced in ASP.NET Core, they are almost similar to Partial Views but is more powerful. When you use Partial Views, you have dependency over the Controller. However, when you use the ViewComponent attribute, you do not have to depend on the Controller, so we will establish separation of concerns and have better testability. Even though the existing Partial View HTML helper is still supported, it is preferable to use the View component whenever you want to show a reusable piece of information when you are using .NET Core.

Creating a View component

You can create a ViewComponent using any of the following:

• Create a class by deriving from the ViewComponent attribute
• Decorate a class with the [ViewComponent] ...