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 7: 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 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 events. Kanban boards visually depict work at various stages of a process. Our Kanban board will include three dropzones. Finally, we will use arbitrary parameters and attribute splatting to create an object to add new tasks to our Kanban board.

In this chapter, we will cover the following topics:

  • Event handling
  • Arbitrary parameters
  • Attribute splatting
  • ...