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)

Project overview

In this chapter, we will build a Blazor WebAssembly app to display a local 5-day weather forecast and then convert it into a PWA.

The web app we will build uses JavaScript's Geolocation API to determine the current latitude and longitude of the device. It uses the OpenWeather One Call API to obtain the local weather forecast and uses a variety of Razor components to display the weather forecast to the user. After we have completed the web app, we will convert it into a PWA by adding a logo, a manifest file, and a service worker. Finally, we will install, run, and uninstall the PWA.

This is a screenshot of the completed application:

Figure 5.4 – WeatherForecast application

The build time for this project is approximately 120 minutes.