Book Image

Blazor WebAssembly by Example

By : Toi B. Wright
Book Image

Blazor WebAssembly by Example

By: Toi B. Wright

Overview of this book

Blazor WebAssembly makes it possible to run C# code on the browser instead of having to use JavaScript, and does not rely on plugins or add-ons. The only technical requirement for using Blazor WebAssembly is a browser that supports WebAssembly, which, as of today, all modern browsers do. Blazor WebAssembly by Example is a project-based guide for learning how to build single-page web applications using the Blazor WebAssembly framework. This book emphasizes the practical over the theoretical by providing detailed step-by-step instructions for each project. You'll start by building simple standalone web applications and progress to developing more advanced hosted web applications with SQL Server backends. Each project covers a different aspect of the Blazor WebAssembly ecosystem, such as Razor components, JavaScript interop, event handling, application state, and dependency injection. The book is designed in such a way that you can complete the projects in any order. By the end of this book, you will have experience building a wide variety of single-page web applications with .NET, Blazor WebAssembly, and C#.
Table of Contents (11 chapters)

Chapter 6: Building a Shopping Cart Using Application State

Sometimes, we need our applications to maintain state between different pages. We can accomplish this by using dependency injection (DI). DI is used to access services that are configured in a central location.

In this chapter, we will create a shopping cart. As you add and delete items from the shopping cart, the application will maintain a list of the items in the shopping cart. The contents of the shopping cart will be retained when a user navigates to another page and then returns to the page with the shopping cart. Also, the shopping cart's total will be displayed on all of the pages.

In this chapter, we will cover the following topics:

  • Application state
  • Dependency injection
  • Creating the shopping cart project