Introduction to Blazor WebAssembly

ASPNC-110 (3 Days)

Blazor Training Overview

Blazor is a hot new .NET Core web technology for hosting applications that can run your client-side C# code directly in the browser using WebAssembly.

In this Introduction to Blazor WebAssembly training course, attendees learn how to build UI apps leveraging the same component-based patterns popularized by libraries such as Angular and React, but using C# programming. Students learn how to reduce dependence on JavaScript UI libraries and frameworks and utilize JavaScript only when needed, not as the basis of their client-side applications. This course also utilizes an ASP.NET Core backend.

Location and Pricing

Accelebrate courses are taught as private, customized training for groups of 3 or more at your site. In addition, we offer live, private online training for teams who may be in multiple locations or wish to save on travel costs. To receive a customized proposal and price quote for private on-site or online training, please contact us.

Blazor Training Objectives

All students will learn how to:

Understand the Blazor platform
Build UIs with components
Utilize data binding and event handling
Compose components
Build Blazor pages and configure routing
Deploy a Blazor WebAssembly application to production
Consume server data via REST APIs
Unit test Blazor apps

Blazor Training Outline

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Introduction

What is Blazor?
Blazor Hosting Models
What is Blazor Server vs. Blazor WebAssembly?
What is WebAssembly?
Browser Compatibility
Web Assembly vs. JavaScript
How does .NET Core / C# run in a web browser?

Blazor WebAssembly Application

Project Template
Create a New Application
Hosting Blazor WebAssembly with a ASP.NET Core MVC Server
Configuration
Dependency Injection
Environments
Logging
Handling Errors
Debugging WebAssembly

Razor Components and Data Binding

What is a Component?
Creating a Data Model
Binding the Data Model to the HTML
Passing Arbitrary Attributes
Handling Events
Manually Trigger State Updates and Re-rendering

Composing Razor Components

Decompose a Component into Smaller Components
One-Way Data Binding
Two-Way Data Binding
Pass Data from a Parent Component to a Child Component using Parameters
Pass Data from a Child Component to a Parent Component using Event Callbacks
Use Keys to Optimize Performance
Use Refs to Access DOM Elements
Razor Component Libraries
Razor Component Design Patterns
- Parameters are Immutable
- Lift State Up
- Managing State in General

Razor Component Forms

What is the purpose of Form?
Collecting Data using a Form, Input, Select and Textarea Elements
Explore Form Element Two-Data Binding
Build Forms with the Blazor Edit Form Razor Component
Explore the Concept of the Edit Context
Use the Specialized Edit Form Controls
- Input Text
- Input TextArea
- Input Select
- Input Number
- Input Checkbox
- Input Date
Applying Validation to the Form
Decorating the View Model with Validation Attributes
Code Custom Validation Attributes

Razor Component Pages

What is the Page model?
Differences between Razor Pages and Razor Components
Using a Razor Component as a Page
Explore the Router Component
Configuring Page Routing
Route to Components from Multiple Assemblies
Using Route Parameters
Using the Query String
Applying Authorization to a Razor Component Page
Using Authorization within the Component Tree

Using Server Data

ASP.NET Core MVC Web API
- What is ASP.NET Core MVC?
- What is a REST API?
- What is an API Controller?
- Injecting the Http Client
- Exploring the Http Client
- Calling a REST API from a Blazor Component using the HttpClient

Interacting with JavaScript

What is the JavaScript Interop?
When is JavaScript needed?
Synchronous vs. Asynchronous Calls
How to call a JavaScript function from a Component
How to call C# code from JavaScript
Calling Static Methods
Calling Instance Methods
Organizing JavaScript Code within a Blazor WebAssembly App
Explore JavaScript Ecosystem
- Client-Side Libraries
- NPM & Yarn
- Webpack
- Useful Libraries

Unit Testing

What is Unit Testing?
Principles of Unit Testing
- Defining a Unit
- Setup/Teardown
- Testing in Isolation
- Determining What to Test
- Code Coverage
- Test Frameworks
- Stubs, Mocks and Spies
xUnit
- What is xUnit?
- Testing Framework
- Facts vs. Theory
- Assertions
- Integration with Visual Studio
Razor Components
- What Should be Tested on a Razor Component?
- What is bUnit?
- Using bUnit with xUnit
- Setup and define components under tests in C# or Razor syntax
- Verify outcome using semantic HTML comparer
- Interact with and inspect components
- Trigger event handlers
- Provide cascading values
- Inject services
- Mock IJsRuntime
- Perform snapshot testing

Conclusion

50%

Lecture/Demo

50%

Lab

Course Number:

ASPNC-110

Duration:

3 Days

Prerequisites:

C# programming experience
HTML, CSS, and JavaScript development experience

Training Materials:

All Blazor training students receive comprehensive courseware.

Software Requirements:

Windows 10 or later with at least 8 GB RAM
Visual Studio 2019 or later
.NET Core 3.1 or later SDK
LocalDB or another version of SQL Server
Postman application
Additional lab files that Accelebrate provides

Contact Us:

Accelebrate’s training classes are available for private groups of 3 or more people at your site or online anywhere worldwide.

Don't settle for a "one size fits all" public class! Have Accelebrate deliver exactly the training you want, privately at your site or online, for less than the cost of a public class.

For pricing and to learn more, please contact us.

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