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Microsoft LINQ Resource Center

Microsoft LINQ Introductions
Introducing LINQ
Sample chapter: “Introducing LINQ,” from LINQ in Action, by Fabrice Marquerie, Steve Eichert, and Jim Wooley (January 2008). Discusses what LINQ is, a LINQ overview, LINQ as a toolset, LINQ as language extensions, why we need LINQ, common problems, addressing a paradigm mismatch, object-relational mapping, object-XML mapping, design goals and origins of LINQ, the goals of the LINQ Project, history of LINQ, ObjectSpaces, XQuery implementation, querying collections in memory, LINQ to objects, querying XML documents, why we need LINQ to XML, querying relational databases, what make LINQ to SQL special, and the DataContext.
Language Integrated Query (LINQ)
Definition of the Language Integrated Query (LINQ) from Wikipedia. Topics include language features (anonymous types, extension methods, lambda expressions, expression trees, and standard query operators), data sources, and SQLMetal (a tool for automatic class generation). Additional links are provided to the Microsoft LINQ Project, C# LINQ samples, Visual Basic LINQ samples, the Microsoft LINQ forum, the LINQ page on NetFXGuide, and the LINQ wiki.
Introducing the Entity Framework & LINQ
"Introducing the Entity Framework and LINQ," by Roger Jennings. Discusses the Entity Framework (EF), Language Integrated Query (LINQ), Visual Studio 2008, SQL Server 2008, data abstraction, the Microsoft Entity Data Model (EDM), enterprise-grade object/relational mapping (O/RM), .NET FX 3.5 classes, LINQ to Objects, LINQ to SQL, LINQ to DataSets, LINQ to Entities, LINQ to XML, and the BLINQ project.
Learn The Basics Of LINQ
"Learn The Basics Of LINQ," by Timothy Khouri. This tutorial on LINQ (Language INtegrated Query) discusses the need for LINQ, basic LINQ queries, querying unconventional data sources, extension methods, and lambda expressions.
Introduction to LINQ
Article: "Introduction to LINQ ," by Sacha Barber. Discusses what LINQ is, LINQ operators including restriction (WHERE), predicates, projection (SELECT), partitioning (Take/Skip), Join, concatenation, order (OrderBy/ThenBy), group (GroupBy), set (Distinct/Union/Intersect/Except), Equal, element (First/FirstOrDefault), generation (Range/Repeat/Empty), and qualifiers (Any/All/Contains); dynamicall creating LINQ queries and variables.

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Update :: November 15, 2019