Blazor WebAssembly by Example, 2e: Use practical projects to start building web apps with .NET 7, Blazor WebAssembly, and C# , Second Edition

Toi B. Wright

$34.99

4.2 (21 Ratings)

Paperback Feb 2023 438 pages 2nd Edition

Toi B. Wright

$34.99

4.2 (21 Ratings)

Paperback Feb 2023 438 pages 2nd Edition

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Blazor WebAssembly by Example, 2e

Questions

The following questions are provided for your consideration:

Which of the following hosting models requires a constant connection to a server: Blazor WebAssembly, Blazor Server or Blazor Hybrid?
Does using Blazor WebAssembly mean that you will never need to write JavaScript ever again?
Does Blazor WebAssembly require any plugins to be installed on the browser?
How much does it cost to get started developing with Blazor WebAssembly?

Razor components

Blazor WebAssembly is a component-driven framework. Razor components are the fundamental building blocks of a Blazor WebAssembly application. They are classes that are implemented using a combination of C#, HTML, and Razor syntax. When the web app loads, the classes get downloaded into the browser as normal .NET assemblies (DLLs).

IMPORTANT NOTE

In this book, the terms Razor component and component are used interchangeably.

Using components

HTML element syntax is used to add one component to another component. The markup looks like an HTML tag where the name of the tag is the component type.

The following markup in the Pages/Index.razor file of the Demo project, which we will create later in this chapter, will render a SurveyPrompt instance:

<SurveyPrompt Title="How is Blazor working for you?" />

The preceding SurveyPrompt element includes an attribute parameter named Title.

Parameters

Component parameters...

Routing

In Blazor WebAssembly, routing is handled on the client, not on the server. As you navigate in the browser, Blazor intercepts that navigation and renders the component with the matching route.

The URLs are resolved relative to the base path that is specified in the wwwroot/index.html file. The base path is specified in the head element using the following syntax:

<base href="/" />

Unlike other frameworks that you may have used, the route is not inferred from the location of its file. For example, in the Demo project, the Counter component is in the /Pages/Counter folder, yet it uses the following route:

/counter

This is the @page directive used by the Counter component:

@page "/counter"

Route parameters

Route parameters can be used to populate the parameters of a component. The parameters of both the component and the route must have the same name, but they are not case-sensitive.

You can provide more than one...

Razor syntax

Razor syntax is made up of HTML, Razor markup, and C#. Rendering HTML from a Razor component is the same as rendering HTML from an HTML file. Razor syntax uses both inline expressions and control structures to render dynamic values.

Inline expressions

Inline expressions start with an @ symbol followed by a variable or function name. This is an example of an inline expression:

<h1>Blazor is @Text!</h1>

In the preceding example, Blazor will interpret the text after the @ symbol as either a property name or a method name.

Control structures

Control structures also start with an @ symbol. The content within the curly brackets is evaluated and rendered to the output. This is an example of an if statement from the FetchData component in the Demo project that we will create later in this chapter:

@if (forecasts == null)
{
    <p><em>Loading...</em></p>
}

Conditionals

The following types of conditionals...

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Key benefits

Explore and build complete, easy-to-follow web projects using Blazor. Each project includes a video example too.
Test your skills in building a weather app, an expense tracker, and a Kanban board with real-world applications.
Develop a deeper understanding on how to work with Blazor WebAssembly without spending too much time focusing on the theory.

Description

Blazor WebAssembly helps developers build web applications without the need for JavaScript, plugins, or add-ons. With its continued growth in popularity, getting started with Blazor now can open doors to new career paths and exciting projects – and Blazor WebAssembly by Example will make your first steps easier. This is a project-based guide that will teach you how to build single-page web applications with Blazor, focusing heavily on the practical over the theoretical by providing detailed step-by-step instructions for each project. The author also includes a video for each project showing her following the step-by-step instructions, so readers can use them if they're unsure about any particular step. In this updated edition, you'll start by building simple standalone web applications and gradually progress to developing more advanced hosted web applications with SQL Server backends. Each project will cover a different aspect of the Blazor WebAssembly ecosystem, such as Razor components, JavaScript interop, security, event handling, debugging on the client, application state, and dependency injection. The book’s projects get more challenging as you progress, but you don’t have to complete them in order, which makes this book a valuable resource for beginners as well as those who just want to dip into specific topics. By the end of this book, you will have experience and lots of know-how on how to build a wide variety of single-page web applications with .NET, Blazor WebAssembly, and C#.

Who is this book for?

This book is for .NET web developers who want to leverage the power of .NET and C# to write single-page web applications using Blazor WebAssembly without using JavaScript frameworks. To get started with this book, you’ll need at least beginner-level knowledge of the C# language, .NET framework, Microsoft Visual Studio, and web development concepts.

What you will learn

Discover the power of the C# language for both server-side and client-side web development
Build your first Blazor WebAssembly application with the Blazor WebAssembly App project template
Learn how to debug a Blazor WebAssembly app, and use ahead-of-time compilation before deploying it on Microsoft's cloud platform
Use templated components and the Razor class library to build and share a modal dialog box
Learn how to use JavaScript with Blazor WebAssembly
Build a progressive web app (PWA) to enable native app-like performance and speed
Secure a Blazor WebAssembly app using Azure Active Directory
Gain experience with ASP.NET Web APIs by building a task manager app

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Franck Jan 03, 2024

An excellent book that gradually guides us in building applications while incorporating the necessary skills to execute a project from start to finish. I highly recommend it

Subscriber review

Ryan Contento Mar 14, 2023

This book is very well written and easy to follow. It is a fantastic place to start learning Blazor and will have you to the point where you can begin your own projects by the end. Lots of great examples to use as references as well. Highly recommend.

Amazon Verified review

Brian Barnett Apr 06, 2023

Blazor WebAssembly By Example 2nd edition by Toi B. Wright is an exceptional book for developers who want to get started with Blazor WebAssembly, a modern and powerful framework for building web applications using .NET and C#.The book is structured in a very comprehensive manner, starting with the basics of Blazor WebAssembly, then gradually building up the reader's understanding of the framework with more advanced topics. The author provides clear explanations and code examples that make it easy for developers to follow along and implement the concepts they learn.One of the strengths of the book is the real-world examples provided throughout. Toi shows how to build a variety of applications, such as a calculator, a weather app, and a movie review app, each demonstrating various aspects of the framework. These examples help readers to understand how to apply what they learn to their own projects.The book covers a wide range of topics, including components, data binding, forms, validation, routing, and authentication. Additionally, it goes into detail on how to integrate Blazor WebAssembly with other technologies, such as ASP.NET Core and Entity Framework Core, which is particularly helpful for developers looking to build complex web applications.Overall, the book is an excellent resource for developers who want to learn how to build powerful web applications with Blazor WebAssembly. The book is well-written, easy to follow, and provides plenty of practical examples that will help readers to quickly gain a strong understanding of the framework. I highly recommend this book to any developer looking to get started with Blazor WebAssembly.

Daniel Costea Apr 13, 2023

From time to time I like to go back to the basics by reading books like "Blazor WebAssembly byExample". I think this book is in the Goldilocks zone of introductory books as it offers a good balance between theoretical concepts and hands-on practice. I love that the author guides the audience through the learning steps, providing additional tips, notes, and references at the same time. If you are new to Blazor, this is definitely a great book to start with. If you're willing to keep up with the latest changes like me, I recommend it again, as this is another opportunity to migrate from other front-end frameworks to one that's more integrated with the .NET ecosystem.

Christopher West Feb 28, 2023

If you're looking for a hands-on guide to building web applications with Microsoft's Blazor framework, "Blazor Web Assembly by Example" by Toi B. Wright is an excellent choice! The book is designed to help developers of all skill levels get up to speed quickly, with a series of practical examples that demonstrate key concepts and techniques.Starting with the basics of Blazor's architecture, the author guides you through the process of creating a simple application from scratch, step by step. As you work your way through the examples, you'll learn how to create components, handle data binding, implement validation, and even add authentication.One of the things I appreciate about this book is the author's emphasis on real-world application. Rather than just explaining the theory behind Blazor, she shows you how to use it to solve real problems. This makes the book especially helpful for developers who are new to Blazor and want to get up to speed quickly.Overall, "Blazor Web Assembly by Example" is a well-written and accessible guide to Blazor development. Whether you're a seasoned developer or just starting out, this book is sure to help you improve your skills and build better web applications. I highly recommend it!

Blazor WebAssembly by Example, 2e: Use practical projects to start building web apps with .NET 7, Blazor WebAssembly, and C# , Second Edition

What do you get with Print?

Blazor WebAssembly by Example, 2e

Questions

Further reading

Razor components

Using components

Parameters

Routing

Route parameters

Razor syntax

Inline expressions

Control structures

Conditionals

Hot Reload

Creating the Demo Blazor WebAssembly project

Project overview

Summary

Questions

Further reading

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