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)

Creating the TaskManager project

The TaskManager project will be created by using Microsoft's Blazor WebAssembly App project template to create a hosted Blazor WebAssembly app. First, we will examine the demo project created by the project template. Then, we will add a TaskItem class and a TaskItemsController class. We will use Entity Framework migrations to create a database in SQL Server. Finally, we will demonstrate how to read data, update data, delete data, and add data using the HttpClient service.

Getting started with the project

We need to create a new Blazor WebAssembly app. We do this as follows:

  1. Open Visual Studio 2019.
  2. Click the Create a new project button.
  3. In the Search for templates (Alt+S) textbox, enter Blazor and then hit the Enter key.

    The following screenshot shows the Blazor WebAssembly App project template that we will be using:

    Figure 8.4 – Blazor WebAssembly App project template

  4. Select the Blazor WebAssembly App project template...