Book Image

Blazor WebAssembly by Example, 2e - Second Edition

By : Toi B. Wright
5 (1)
Book Image

Blazor WebAssembly by Example, 2e - Second Edition

5 (1)
By: Toi B. Wright

Overview of this book

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#.
Table of Contents (15 chapters)
13
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14
Index

Building a Kanban Board Using Events

As developers, we strive to make our applications as dynamic as possible. For that, we use events. Events are messages sent by an object to indicate that an action has occurred. Razor components can handle many different types of events.

In this chapter, we will learn how to handle different types of events in a Blazor WebAssembly app. We will learn how to use lambda expressions and how to prevent default actions. We will also learn how to use both arbitrary parameters and attribute splatting to simplify how we assign attributes to components.

The project that we create in this chapter will be a Kanban board that uses the drag-and-drop API. Kanban boards visually depict work at various stages of a process. Our Kanban board will be comprised of three Dropzone components, with each one representing a different stage. Finally, we will use arbitrary parameters and attribute splatting to create a component to add new tasks to our Kanban board...