C# 2010 ASP.NET 4高级编程指南

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"C# 2010 ASP.NET 4进阶教程" 这篇教程是针对C# 2010和ASP.NET 4的高级主题进行深入探讨的专业指南，由Matthew MacDonald、Adam Freeman和Mario Szpuszta三位专家共同撰写。这本书涵盖了ASP.NET 4框架的新特性和改进，旨在帮助开发者提升他们的技能并掌握更复杂的应用开发。在ASP.NET 4中，有几个关键的知识点值得注意： 1. **改进的页面生命周期管理**：ASP.NET 4引入了更细粒度的控制，允许开发者在更精确的阶段处理事件，比如通过`InitComplete`、`PreRenderComplete`等事件来优化代码执行。 2. **动态数据支持**：ASP.NET Dynamic Data提供了一种快速构建数据驱动网站的方法，无需编写大量数据访问代码。它支持模型绑定和数据验证，使得数据库操作更加便捷。 3. **模型绑定**：这是一个强大的新特性，可以简化数据访问层与视图之间的数据交互。模型绑定允许开发者声明性地指定如何获取和设置数据，减少了对控件事件的依赖。 4. **MVC框架增强**：ASP.NET MVC 3（虽然不是ASP.NET 4的一部分，但通常一起讨论）引入了 Razor视图引擎，提供更简洁的视图语法。此外，增加了对异步控制器和过滤器的改进，以及更强大的测试支持。 5. **AJAX更新**：ASP.NET 4中的AJAX控件工具包和AJAX功能进行了升级，提供了更好的用户体验，同时降低了对完整页面刷新的需求。 6. **WebForms改进**：包括自定义控件的改进、母版页的增强、以及更高效的视图状态管理。WebForms模式下的路由功能也得到了加强，使得URL管理更加灵活。 7. **性能优化**：ASP.NET 4包含了一些性能方面的改进，如减少ViewState大小、自动压缩静态内容和动态内容、以及更智能的缓存策略。 8. **部署和配置**：ASP.NET 4提供了更灵活的配置选项，包括配置节的继承和重写，以及更简单的部署策略，如Web Deploy。 9. **安全性更新**：包括更强大的身份验证和授权机制，如基于角色的安全性和Windows集成身份验证，还有防止跨站脚本（XSS）和跨站请求伪造（CSRF）的增强措施。 10. **开发工具的增强**：Visual Studio 2010提供了更丰富的开发环境，如集成的单元测试支持、代码分析工具和改进的调试体验。通过阅读这本书，开发者不仅可以了解这些高级概念，还能学习到如何将它们应用于实际项目，提升他们的ASP.NET 4和C# 2010应用开发能力。书中还可能包含大量实例和最佳实践，帮助读者更好地理解和掌握这些技术。

■ CONTENTS

xiv

Editing Templates in Visual Studio .....................................................................................................436

Binding to a Method ...........................................................................................................................437

Handling Events in a Template ...........................................................................................................439

Editing with a Template......................................................................................................................440

Client IDs in Templates.......................................................................................................................447

The ListView ................................................................................................................447

Grouping .............................................................................................................................................451

Paging.................................................................................................................................................453

The DetailsView and FormView ...................................................................................454

The DetailsView ..................................................................................................................................454

The FormView.....................................................................................................................................457

Advanced Grids............................................................................................................459

Summaries in the GridView ................................................................................................................459

A Parent/Child View in a Single Table ................................................................................................461

Editing a Field Using a Lookup Table..................................................................................................464

Serving Images from a Database .......................................................................................................466

Detecting Concurrency Conflicts ........................................................................................................472

Summary .....................................................................................................................476

■ Chapter 11: Caching and Asynchronous Pages ...............................................477

Understanding ASP.NET Caching.................................................................................477

Output Caching ............................................................................................................478

Declarative Output Caching ................................................................................................................479

Caching and the Query String.............................................................................................................480

Caching with Specific Query String Parameters.................................................................................481

Custom Caching Control .....................................................................................................................481

Caching with the HttpCachePolicy Class ............................................................................................483

Post-Cache Substitution and Fragment Caching................................................................................484

Cache Profiles.....................................................................................................................................487

Cache Configuration ...........................................................................................................................487

Output Caching Extensibility...............................................................................................................488

Data Caching ...............................................................................................................493

Adding Items to the Cache .................................................................................................................494

■ CONTENTS

A Simple Cache Test...........................................................................................................................496

Cache Priorities ..................................................................................................................................498

Caching with the Data Source Controls..............................................................................................498

Cache Dependencies ...................................................................................................502

File and Cache Item Dependencies ....................................................................................................502

Aggregate Dependencies ...................................................................................................................503

The Item Removed Callback ...............................................................................................................504

Understanding SQL Cache Notifications.............................................................................................507

How Cache Notifications Work ...........................................................................................................508

Enabling Notifications.........................................................................................................................508

Creating the Cache Dependency ........................................................................................................509

Custom Cache Dependencies ......................................................................................510

A Basic Custom Cache Dependency...................................................................................................510

A Custom Cache Dependency Using Message Queues ......................................................................512

Asynchronous Pages ...................................................................................................514

Creating an Asynchronous Page.........................................................................................................515

Querying Data in an Asynchronous Page............................................................................................517

Handling Errors...................................................................................................................................519

Using Caching with Asynchronous Tasks...........................................................................................522

Multiple Asynchronous Tasks and Timeouts ......................................................................................524

Summary .....................................................................................................................526

■ Chapter 12: Files and Streams.........................................................................527

Working with the File System......................................................................................527

The Directory and File Classes ...........................................................................................................528

The DirectoryInfo and FileInfo Classes ...............................................................................................530

The DriveInfo Class.............................................................................................................................533

Working with Attributes......................................................................................................................534

Filter Files with Wildcards ..................................................................................................................536

Retrieving File Version Information ....................................................................................................537

The Path Class....................................................................................................................................538

A File Browser ....................................................................................................................................541

■ CONTENTS

xvi

Reading and Writing Files with Streams......................................................................546

Text Files ............................................................................................................................................547

Binary Files.........................................................................................................................................549

Uploading Files ...................................................................................................................................550

Making Files Safe for Multiple Users..................................................................................................552

Compression.......................................................................................................................................557

Serialization.................................................................................................................558

Summary .....................................................................................................................561

■ Chapter 13: LINQ ..............................................................................................563

LINQ Basics..................................................................................................................563

Deferred Execution .............................................................................................................................565

How LINQ Works.................................................................................................................................566

LINQ Expressions................................................................................................................................567

LINQ Expressions “Under the Hood” ..................................................................................................575

LINQ to DataSet............................................................................................................578

Typed DataSets ..................................................................................................................................581

Null Values..........................................................................................................................................581

LINQ to Entities ............................................................................................................581

Generating the Data Model.................................................................................................................582

The Data Model Classes .....................................................................................................................583

Entity Relationships............................................................................................................................586

Querying Stored Procedures...............................................................................................................587

LINQ to Entities Queries “Under the Hood”.........................................................................................589

Database Operations ...................................................................................................595

Inserts.................................................................................................................................................595

Updates ..............................................................................................................................................598

Deletes................................................................................................................................................598

Managing Concurrency.......................................................................................................................598

Handling Concurrency Conflicts .........................................................................................................599

The EntityDataSource Control......................................................................................604

Displaying Data...................................................................................................................................604

■ CONTENTS

xvii

Getting Related Data...........................................................................................................................609

Editing Data ........................................................................................................................................610

Validation............................................................................................................................................611

Using the QueryExtender Control.................................................................................612

Using a SearchExpression ..................................................................................................................613

Using a RangeExpression ...................................................................................................................614

Using a PropertyExpression................................................................................................................614

Using a MethodExpression .................................................................................................................615

Summary .....................................................................................................................616

■ Chapter 14: XML...............................................................................................617

When Does Using XML Make Sense? ..........................................................................617

An Introduction to XML ................................................................................................618

The Advantages of XML......................................................................................................................619

Well-Formed XML ...............................................................................................................................620

XML Namespaces ...............................................................................................................................621

XML Schemas.....................................................................................................................................622

Stream-Based XML Processing ...................................................................................624

Writing XML Files................................................................................................................................624

Reading XML Files ..............................................................................................................................628

In-Memory XML Processing.........................................................................................631

The XmlDocument ..............................................................................................................................632

The XPathNavigator ............................................................................................................................636

The XDocument ..................................................................................................................................638

Searching XML Content ...............................................................................................643

Searching with XmlDocument ............................................................................................................644

Searching XmlDocument with XPath..................................................................................................646

Searching XDocument with LINQ........................................................................................................649

Validating XML Content................................................................................................651

A Basic Schema..................................................................................................................................651

Validating with XmlDocument ............................................................................................................652

Validating with XDocument ................................................................................................................654

■ CONTENTS

xviii

Transforming XML Content ..........................................................................................654

A Basic Stylesheet..............................................................................................................................655

Using XslCompiledTransform .............................................................................................................656

Using the Xml Control.........................................................................................................................657

Transforming XML with LINQ to XML..................................................................................................658

XML Data Binding ........................................................................................................660

Nonhierarchical Binding .....................................................................................................................660

Using XPath ........................................................................................................................................662

Nested Grids .......................................................................................................................................665

Hierarchical Binding with the TreeView .............................................................................................667

Using XSLT..........................................................................................................................................669

Binding to XML Content from Other Sources......................................................................................671

Updating XML Through the XmlDataSource .......................................................................................672

XML and the ADO.NET DataSet....................................................................................672

Converting the DataSet to XML...........................................................................................................673

Accessing a DataSet As XML..............................................................................................................675

Summary .....................................................................................................................678

Part 3: Building ASP.NET Websites.......................................................................679

■ Chapter 15: User Controls ................................................................................681

User Control Basics .....................................................................................................681

Creating a Simple User Control ..........................................................................................................682

Converting a Page to a User Control...................................................................................................684

Adding Code to a User Control.....................................................................................684

Handling Events..................................................................................................................................684

Adding Properties ...............................................................................................................................685

Using Custom Objects ........................................................................................................................688

Adding Events.....................................................................................................................................690

Exposing the Inner Web Control .........................................................................................................694

Dynamically Loading User Controls .............................................................................695

Portal Frameworks .............................................................................................................................695

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