使用Ext.NET构建富互联网应用实战

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"《Ext.NET Web Application Development》是Anup Shah撰写的一本书，由Packt Publishing出版，旨在指导读者使用Ext.NET构建富互联网应用程序。本书适用于熟悉ASP.NET并希望开发基于.NET的富互联网应用的开发者，无论是新手还是已有Ext JS经验的开发者都能从中受益。书中涵盖了Ext.NET的各种组件、布局、AJAX交互、数据绑定和服务器集成，以及如何创建可复用组件和插件。此外，还涉及用户友好的表单、客户端和服务器端验证等内容。书中的实例和提示将帮助读者从零开始逐步学习Ext.NET。" 在《Ext.NET Web Application Development》一书中，作者Anup Shah详细介绍了如何利用Ext.NET这个强大的框架，结合ASP.NET Web Forms和ASP.NET MVC来构建富互联网应用。Ext.NET是Sencha的Ext JS JavaScript框架与ASP.NET的融合，提供了一种完整的客户端-服务器端开发体验。通过这本书，读者将了解： 1. **Ext.NET和Ext JS的结合**：理解这两个框架如何协同工作，实现服务器端的无缝集成，创建出功能丰富的应用程序。 2. **UI组件和布局**：学习如何组织控件和布局，创建具有桌面应用般交互性的用户界面。 3. **AJAX技术**：掌握不同的AJAX选项，了解如何根据需求选择合适的技术与服务器进行交互。 4. **数据表示和建模**：学习各种本地或远程数据表示方法，以及如何在需要时重用这些数据。 5. **复杂组件**：创建高效的、与服务器交互的网格、树和其他基于AJAX的组件。 6. **组件扩展和插件**：提高自定义组件的可复用性和可维护性，通过创建插件实现这一目标。 7. **表单和验证**：构建用户友好的表单，包括丰富的客户端和服务器端验证机制。 8. **问题排查**：学习如何解决应用程序中遇到的问题。本书采用逐步教学的方式，提供了丰富的示例和技巧，适合有一定ASP.NET基础，想要提升到富互联网应用开发领域的.NET开发者阅读。无论你是Ext JS的新手还是已有经验的开发者，都能通过这本书提升自己的技能，并在.NET环境中充分利用Ext JS的优势。

Table of Contents

[ vii ]

What else can you do with TreePanels? 297

TabPanel 298

TabPanel – overview 298

Asynchronous tab loading 301

Useful tab features 302

Tabs rendered at the bottom 303

Plain tabs 303

TabScrollerMenu plugin 303

Tab menus 304

Using TabBar to add custom toolbar items 307

More TabPanel examples 308

Summary 309

Extending Ext.NET – Custom Controls and Plugins 311

Basic control builder 312

Example 312

Benets of this approach 316

Drawbacks to this approach 316

Extending Ext.NET controls 316

Extending the Ext.NET class 316

Extending the Ext JS class 318

Embedding the resources 321

Declaring your embedded web resources 322

Adding your embedded resources to your Ext.NET component 322

Custom events 323

Dening the event in the JavaScript class 324

Dening the client-side event on the server side 324

Creating a custom DirectEvent 329

Passing properties to your JavaScript class 332

Using the custom component on an ASP.NET Web Form 333

Using your custom component in ASP.NET MVC (Razor) 334

A basic control renderer 335

Reusing Ext.NET's builder pattern for a richer custom MVC framework for

your own application 336

Recap of steps to create a custom component 341

Scenario 1 – simple subclass, no custom events, no custom JavaScript or CSS 343

Scenario 2 – simple subclass, no custom events, but with custom JavaScript or CSS 343

Scenario 3 – subclass with custom Listeners and/or DirectEvents, and custom

JavaScript/CSS 343

Component design considerations 344

Building more complex controls through composition 344

GenericComponent<T> – a quick alternative to wrap Ext JS ready Components 345

Declaring DirectMethods on custom components 345

Supporting ASP.NET Web Forms IPostBackDataHandler 345

Preface

[ 2 ]

Chapter 4, AJAX with Ext.NET, looks at the powerful AJAX options Ext.NET

supports. We cover the powerful DirectEvents and DirectMethods features, as well

as AJAX options specic to certain controls. This is a powerful chapter that lays the

foundation for slick and usable applications that are responsive to user interactions.

Chapter 5, Working with Data, looks at the powerful data handling techniques

available in Ext.NET. We cover XTemplates, which allows you to dene HTML

templates to bind data to, and we explain the Stores, Models, and Proxies

architecture that allows for powerful data-binding reuse across many Ext.NET

components. The ComboBox and DataView are introduced as examples of controls

that reuse this architecture.

Chapter 6, Introducing GridPanels, covers the popular and highly sophisticated

GridPanel control. It is another control that reuses the Stores, Models, and Proxies

architecture, but is given its own chapter. We look at various features of the

GridPanel such as paging, ltering, sorting, grouping, column summaries, row

expanding, and selection models. We also look at how grid editing can be enabled,

including in-line grid editing at the row or cell level. As large as this chapter is, there

are many other GridPanel capabilities that we have not been able to t into this book,

so many links to further examples and resources are also provided.

Chapter 7, Forms and Validation, looks at the numerous form controls available in Ext.

NET, how to lay them out, and how to enable client and remote validation. We also

look at how custom validators can be created. Lastly, we also see how Ext.NET's

data-binding capabilities can also be reused with forms.

Chapter 8, Trees and Tabs with Ext.NET, introduces the popular TreePanel and

TabPanel controls. Due to limited space in the book, we cannot cover all the

sophisticated possibilities that these controls offer, but we do provide an overview

of how tree nodes can be loaded asynchronously and how to reuse the Store,

Models, and Proxies architecture to bind data to trees. We also look at various ways

TabPanels can be congured, including how to load content on-demand using

various AJAX techniques supported by Ext.NET.

Chapter 9, Extending Ext.NET Controls – Custom Controls and Plugins, is perhaps the

most powerful chapter in this book. It shows you how to extend Ext.NET controls

in a variety of ways to support both ASP.NET Web Forms and ASP.NET MVC

Razor templates, enabling you to create highly reusable components. Most of the

chapter looks at how controls can be extended, but we also look at how you can

use the available plugin mechanisms to reuse functionality across different types

of components.

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