Foreword by Darryl Hogan, Architect Evangelist, Microsoft Corporation Microsoft? S highly anticipated LINQ query technology makes it easy to retrieve programming information from the data source, no matter where it comes from or how it is stored? S. Kimmel begins by reviewing the C state-of-the-art # programming techniques LINQ uses, including anonymous types, partial methods, and Lambda expressions. You will gain a deep and practical understanding of how LINQ works under the hood -? And learn how to do everything from selecting data through integrating XML with other data models. Build efficient LINQ queries to the object NET,. SQL databases, and XML content Use anonymous types to reduce design time, coding effort, and automatically generate debugging time. NET state machine by rebuilding the new LINQ query syntax Teachers, operators, extension methods, sorting, grouping, aggregate and set operations, and more advantage of select - and use it on your application business layer n-tier Query relational data stored in Microsoft SQL Server database Use nullable types to eliminate access codes unnecessary pipe Use LINQ with ADO.NET 3.0 and Microsoft? s powerful new Entity Framework Extract XML data without the hassles or complexity of XPath Automatic build XML data from CSV files and other non-XML Query Active Directory by extending LINQ Introduction 1 Part I Preparation for LINQ 1 Programming with Anonymous Types 5 2 Using Compound Type Initialization 29 3 Defining Extension and Partial Methods 61 4 yield return: Using Generator. NET 85? S State Machine 5 Understanding Lambda Expressions and Closing 97 6 Using Standard Query Operators 121 Part II LINQ to Objects 7 Sorting and Grouping Question 137 8 Using Aggregate Operations 151 9 Performing Set Operations 167 10 Mastering Select and SelectMany 185 11 Joining Query Results 211 12 Outlook and Active Directory query 239 Part III LINQ for Data 13 query relational data with LINQ 265 14 Creating Better Entities and Mapping Inheritance and Aggregation 289 15 Joining Database Tables with LINQ Queries 309 16 Updating Anonymous Relational Data 349 17 Introducing ADO.NET 3.0 and the Entity Framework 383 Part IV LINQ to XML 18 Extracting Data from XML 415 19 Comparing LINQ to XML with Other XML Technologies 437 20 Building XML from Non-XML Data 453 21 Emitting XML with the XmlWriter 463 22 Combining XML with Other Data Models 469 23 LINQ to XSD Supports Typed XML Programming 485 Index