Build and Learn ASP.NET 6.0 Blazor Hands-On - Communication Between Movie Detail and Movies

This tutorial explains how to enable communication between child and parent components in a web application using event callbacks. It demonstrates the process of adding an event callback parameter in the child component and modifying the parent component to handle this callback. The tutorial also covers the implementation of an async method to invoke the event callback, ensuring that changes are reflected without refreshing the browser. The key takeaway is understanding how event callbacks facilitate communication between components.

What is the main goal of the tutorial?

• To create a new movie database.

• To learn how to refresh the browser automatically.

• To understand how to communicate between child and parent components.

• To design a new user interface.

What is the purpose of adding an event callback parameter in the child component?

• To manage component state.

• To style the component.

• To facilitate communication with the parent component.

• To handle user input.

What type is the event callback parameter in the child component?

• EventCallback

• Boolean

• Integer

• String

What is the role of the 'refresh' method in the parent component?

• To update the movie list using the event callback.

• To change the UI theme.

• To add new movies to the database.

• To delete movies from the list.

How does the parent component get updated when a new movie is added?

• By manually refreshing the browser.

• By sending a request to the server.

• By using a timer to check for updates.

• By invoking the event callback asynchronously.

What method is used to invoke the event callback in the child component?

• InvokeSync

• InvokeAsync

• CallEvent

• TriggerEvent

What is the final outcome of implementing the event callback?

• The browser refreshes automatically.

• The movie list is deleted.

• The UI updates without refreshing the browser.

• The application crashes.