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商品描述
LINQ is the part of the .NET Framework that provides a generic approach to querying data from different data sources. It has quickly become the next must-have skill for .NET developers. Pro LINQ: Language Integrated Query in C# 2010 is all about code. Literally, this book starts with code and ends with code. Most books show the simplest examples of how to use a method, but they so rarely show how to use the more complex prototypes. This book is different. Demonstrating the overwhelming majority of LINQ operators and prototypes, it is a veritable treasury of LINQ examples.
Rather than obscure the relevant LINQ principles in code examples by focusing on a demonstration application you have no interest in writing, this book cuts right to the chase of each LINQ operator, method, or class. However, where complexity is necessary to truly demonstrate an issue, the examples are right there in the thick of it. For example, code samples demonstrating how to handle concurrency conflicts actually create concurrency conflicts so you can step through the code and see them unfold.
Face it, most technical books, while informative, are dull. LINQ need not be dull. Written with a sense of humor, this book will attempt to entertain you on your journey through the wonderland of LINQ and C# 2010.
What you’ll learn
- How to leverage all the new LINQ relevant C# 2008 language features including extension methods, lambda expressions, anonymous data types, and partial methods.
- How to use LINQ to Objects to query in-memory data collections such as arrays, ArrayLists, and Lists to retrieve the data you want.
- Why some queries are deferred, how a deferred query can bite you, and how you can make deferred queries work for you.
- How to use LINQ to XML to revolutionize your creation, manipulation, and searching of XML data.
- How to query DataSets with LINQ to DataSet so you can coexist with legacy code and use LINQ to query databases other than SQL Server.
How to query Databases with LINQ to SQL, write your own entity classes, and understand how to handle concurrency conflicts.
Who is this book for?
This book is written for the proficient C# developer, but you do not need to be up on all the latest C# features to understand the material. When you finish this book, you will have a much greater understanding of the latest C# features.
商品描述(中文翻譯)
LINQ 是 .NET Framework 的一部分,提供了一種通用的方法來從不同的數據來源查詢數據。它迅速成為 .NET 開發人員必備的技能。Pro LINQ: Language Integrated Query in C# 2010 完全圍繞代碼展開。這本書字面上是從代碼開始,並以代碼結束。大多數書籍展示了如何使用方法的最簡單示例,但很少展示如何使用更複雜的原型。這本書則不同。它展示了絕大多數的 LINQ 操作符和原型,是一部真正的 LINQ 示例寶庫。
這本書並不會因為專注於你無興趣編寫的演示應用程序而模糊相關的 LINQ 原則,而是直接切入每個 LINQ 操作符、方法或類的重點。然而,當需要複雜性來真正展示一個問題時,示例會恰到好處地呈現。例如,展示如何處理並發衝突的代碼示例實際上會創造並發衝突,讓你可以逐步執行代碼並觀察它們的展開。
面對現實,大多數技術書籍雖然資訊豐富,但卻乏味。LINQ 不必是乏味的。這本書以幽默的語氣撰寫,將試圖在你探索 LINQ 和 C# 2010 的奇妙旅程中娛樂你。
你將學到的內容:
- 如何利用所有新的 LINQ 相關 C# 2008 語言特性,包括擴展方法、Lambda 表達式、匿名數據類型和部分方法。
- 如何使用 LINQ to Objects 查詢內存中的數據集合,如數組、ArrayLists 和 Lists,以檢索所需的數據。
- 為什麼某些查詢是延遲的,延遲查詢如何可能會對你造成影響,以及如何讓延遲查詢為你服務。
- 如何使用 LINQ to XML 徹底改變你對 XML 數據的創建、操作和查詢方式。
- 如何使用 LINQ to DataSet 查詢 DataSets,以便與舊代碼共存,並使用 LINQ 查詢 SQL Server 以外的數據庫。
- 如何使用 LINQ to SQL 查詢數據庫,編寫自己的實體類,並理解如何處理並發衝突。
這本書適合誰?
這本書是為熟練的 C# 開發人員撰寫的,但你不需要了解所有最新的 C# 特性就能理解這些內容。當你完成這本書時,你將對最新的 C# 特性有更深入的理解。