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Blazor Web Development Cookbook

Name: Blazor Web Development Cookbook
Author: Pawel Bazyluk
ISBN: 9781835460788

by Pawel Bazyluk

November 2024

Intermediate to advanced

282 pages

7h 2m

English

Packt Publishing

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Blazor Web Development Cookbook
Contributors
About the author
About the reviewers
Preface
Who this book is forWhat this book coversTo get the most out of this bookDownload the example code filesConventions usedSectionsGetting readyHow to do it…How it works…There’s more…See alsoGet in touchShare Your ThoughtsDownload a free PDF copy of this book
Chapter 1: Working with Component-Based Architecture
Technical requirementsInitializing a projectGetting readyHow to do it...How it works...There’s more...Creating your first basic componentGetting readyHow to do it...How it works...There’s more...Declaring parameters on a componentGetting readyHow to do it...How it works...There’s more...Detecting render mode at runtimeGetting readyHow to do it...How it works...Ensuring that a parameter is requiredGetting readyHow to do it...How it works...Passing values from the parent component with CascadingParameterGetting readyHow to do it...How it works...There’s more...Creating components with customizable contentGetting readyHow to do it...How it works...There’s more...Making components genericGetting readyHow to do it...How it works...There’s more...Decoupling components with DynamicComponentGetting readyHow to do it...How it works...
Chapter 2: Synchronous and Asynchronous Data Binding
Technical requirementsBinding values with markup elementsGetting readyHow to do it…How it works…Binding to a specific DOM eventGetting readyHow to do it…How it works…There’s more…Performing asynchronous actions after bindingGetting readyHow to do it…How it works…There’s more…Customizing get and set binding logicGetting readyHow to do it…How it works…There’s more…Simplifying binding with the bind-Value patternGetting readyHow to do it…How it works…Binding with an external data providerGetting readyHow to do it…How it works…
Chapter 3: Taking Control of Event Handling
Technical requirementsHooking into event delegatesGetting readyHow to do it…How it works…There’s more…Delegating with lambda expressionsGetting readyHow to do it…How it works…See alsoDelegating with EventCallbackGetting readyHow to do it…How it works…There’s more…Preventing default event actionsGetting readyHow to do it…How it works…There’s more…Controlling event propagationGetting readyHow to do it…How it works…There’s more…Introducing custom eventsGetting readyHow to do it…How it works…There’s more…Handling long-running eventsGetting readyHow to do it…How it works…There’s more…
Chapter 4: Enhancing Data Display with Grids
Technical requirementsRefactoring a table to a grid componentGetting readyHow to do it…How it works…There’s more…Attaching actions to parts of a gridGetting readyHow to do it…How it works…There’s more…Implementing paginationGetting readyHow to do it…How it works…There’s more…See alsoImplementing sortingGetting readyHow to do it…How it works…Implementing infinite scrollingGetting readyHow to do it…How it works…There’s more…Utilizing QuickGridGetting readyHow to do it…How it works…
Chapter 5: Managing Application State
Technical requirementsHaving bookmarkable stateGetting readyHow to do it…How it works…There’s more…Implementing an in-memory state containerGetting readyHow to do it…How it works…There’s more…Injecting application state as a serviceGetting readyHow to do it…How it works…See alsoInvoking state changes from anywhereGetting readyHow to do it…How it works…There’s more…Persisting stateGetting readyHow to do it…How it works…There’s more…Resolving persisted stateGetting readyHow to do it…How it works…There’s more…Sharing state across interactive render mode boundariesGetting readyHow to do it…How it works…There’s more…
Chapter 6: Building Interactive Forms
Technical requirementsBinding a simple model to a formGetting readyHow to do it…How it works…There’s moreSubmitting static forms without full page reloadGetting readyHow to do it…How it works…There’s more…Binding nested models to a formGetting readyHow to do it…How it works…There’s more…Utilizing built-in input componentsGetting readyHow to do it…How it works…Handling file uploads with a formGetting readyHow to do it…How it works…There’s more…Securing a form with an anti-forgery tokenGetting readyHow to do it…How it works…There’s more…See also

Chapter 7: Validating User Input Forms
Technical requirementsAdding validation to a formGetting readyHow to do it…How it works…There’s more…Leveraging data annotations for form validationGetting readyHow to do it…How it works…There’s more…Implementing custom validation attributesGetting readyHow to do it…How it works…There’s more…Validating complex data modelsGetting readyHow to do it…How it works…There’s more…Styling validation messagesGetting readyHow to do it…How it works…There’s more…Displaying a toast when validation failsGetting readyHow to do it…How it works…Enabling a submit option based on the form stateGetting readyHow to do it…How it works…There’s more…
Chapter 8: Keeping the Application Secure
Technical requirementsScaffolding identityGetting readyHow to do it…How it works…There’s more…Securing pagesGetting readyHow to do it…How it works…There’s more…Securing markup areasGetting readyHow to do it…How it works…There’s more…Creating rolesGetting readyHow to do it…How it works…Modifying a user’s identityGetting readyHow to do it…How it works…See alsoSupporting roles’ and policies’ authorizationGetting readyHow to do it…How it works…There’s more…Resolving authentication state in procedural logicGetting readyHow it works…
Chapter 9: Exploring Navigation and Routing
Technical requirementsEnabling routes from multiple assembliesGetting readyHow to do it…How it works…Working with parameterized routesGetting readyHow to do it…How it works…There’s more…See alsoWorking with query parametersGetting readyHow to do it…How it works…There’s more…See alsoImplementing unified deep linkingGetting readyHow to do it…How it works…There’s more…Handling incorrect navigation requestsGetting readyHow to do it…How it works…See alsoExecuting an asynchronous operation with navigationGetting readyHow to do it…How it works…See alsoCanceling a long-running task when users navigate awayGetting readyHow to do it…How it works…Controlling navigation historyGetting readyHow to do it…How it works…
Chapter 10: Integrating with OpenAI
Technical requirementsSetting up an Azure OpenAI serviceGetting readyHow to do it…How it works…There’s more…See alsoImplementing smart pastingGetting readyHow to do it…How it works…There’s more…Implementing a smart text areaGetting readyHow to do it…How it works…There’s more…See alsoAdding a ChatBotGetting readyHow to do it…How it works…There’s more…See alsoConnecting an Azure OpenAI service to an existing data indexGetting readyHow to do it…How it works…There’s more…See also
Index
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Content preview from Blazor Web Development Cookbook

3 Taking Control of Event Handling

In this chapter, we’ll dive into the world of event handling within Blazor applications. An event is a fundamental building block that signifies an action within the browser, such as clicks, inputs, or page loads. Events allow developers to execute specific code upon user interactions – creating an interactive and dynamic user experience.

We’ll start by exploring how to hook into event delegates, laying the foundation for event management. Next, we’ll discuss delegating responsibilities using EventCallback and lambda expressions that increase flexibility in event handling.

We’ll also cover essential strategies for controlling event propagation and preventing the triggering of default events. These skills are ...

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ISBN: 9781835460788

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Blazor Web Development Cookbook

by Pawel Bazyluk

3

Taking Control of Event Handling

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.