In addition to Code First, EF 4.1 introduces simpler EF coding patterns with the DbContext, DbSet, ChangeTracker and Validation APIs. This second mini-book will take the reader on a tour of these new features and how to take advantage of them. These new classes and APIs let the user focus on the most common coding tasks with Entity Framework and streamlines access to patterns which are frequently used, but were previously non-intuitive and complicated to code. With the new features in hand, the reader will then see how to leverage EF 4.1 in a variety of applications - client applications, web applications, services - and architectures from drag & drop to enterprise apps with repositories, Unit of Work and automated testing. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.

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Bibliografische Details

Titel: Programming Entity Framework: Dbcontext: Querying, Changing, and Validating Your Data with Entity Framework
Verlag: O'Reilly Media, United States, Sebastopol
Erscheinungsjahr: 2012
Sprache: Englisch
ISBN-10: 1449312969
ISBN-13: 9781449312961
Einband: Paperback
Zustand: Very Good

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The DbContext API captures Entity Framework's (EF) most commonly used features and tasks, simplifying development with EF. This concise book shows you how to use the API to perform set operations with the DbSet class, handle change tracking and resolve concurrency conflicts with the Change Tracker API, and validate changes to your data with the Validation API.

With DbContext, you'll be able to query and update data, whether you're working with individual objects or graphs of objects and their related data. You'll find numerous C# code samples to help you get started. All you need is experience with Visual Studio and database management basics.

Use EF's query capabilities to retrieve data, and use LINQ to sort and filter data
Learn how to add new data, and change and delete existing data
Use the Change Tracker API to access information EF keeps about the state of entity instances
Control change tracking information of entities in disconnected scenarios, including NTier applications
Validate data changes before they're sent to the database, and set up validation rules
Bypass EF's query pipeline and interact directly with the database

�ber die Autorin bzw. den Autor

Julia Lerman is the leading independent authority on the Entity Framework and has been using and teaching the technology since its inception in 2006. She is well known in the .NET community as a Microsoft MVP, ASPInsider, and INETA Speaker. Julia is a frequent presenter at technical conferences around the world and writes articles for many well-known technical publications including the Data Points column in MSDN Magazine. Julia lives in Vermont with her husband, Rich, and gigantic dog, Sampson, where she runs the Vermont.NET User Group. You can read her blog at www.thedatafarm.com/blog and follow her on Twitter at julielerman. Rowan is based in Seattle, Washington and works as a Program Manager for the ADO.Net Entity Framework team at Microsoft. Prior to moving to the US he resided in the small state of Tasmania in Australia. Rowan speaks at technical conferences and blogs at http://romiller.com. Outside of technology Rowan's passions include snowboarding, mountain biking, horse riding, rock climbing and pretty much anything else that involves being active. The primary focus of his life, however, is to follow Jesus.

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