ViProgramming Entity Framework: Dbcontext : Querying, Changing, and Validating

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Libro en perfecto estado y poco leído. La tapa no tiene desperfectos y si procede, con sobrecubierta para las tapas duras. Incluye todas las páginas sin arrugas ni roturas. El texto no está subrayado ni resaltado de forma alguna, y no hay anotaciones en los márgenes. Puede presentar marcas de identificación mínimas en la contraportada o las guardas. Muy poco usado. Consulta el anuncio del vendedor para obtener más información y la descripción de cualquier posible imperfección. Ver todas las definiciones de estadose abre en una nueva ventana o pestaña
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“Fine (Unread)”
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Country/Region of Manufacture
United States
SKU
Text-Box-09-
ISBN
9781449312961
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Product Identifiers

Publisher
O'reilly Media, Incorporated
ISBN-10
1449312969
ISBN-13
9781449312961
eBay Product ID (ePID)
111384541

Product Key Features

Number of Pages
256 Pages
Language
English
Publication Name
Programming Entity Framework: Dbcontext : Querying, Changing, and Validating Your Data with Entity Framework
Subject
Programming Languages / C#, Data Modeling & Design, Databases / General, Programming / Microsoft, Programming Languages / Asp.Net
Publication Year
2012
Type
Textbook
Author
Julia Lerman, Rowan Miller
Subject Area
Computers
Format
Trade Paperback

Dimensions

Item Height
0.5 in
Item Weight
16.2 Oz
Item Length
9.2 in
Item Width
7.1 in

Additional Product Features

Intended Audience
Scholarly & Professional
LCCN
2013-427108
Dewey Edition
23
Illustrated
Yes
Dewey Decimal
006.3
Table Of Content
Preface; Audience; Contents of This Book; Conventions Used in This Book; Using Code Examples; Safari® Books Online; How to Contact Us; Acknowledgments;Chapter 1: Introducing the DbContext API; 1.1 Getting the DbContext API into Your Project; 1.2 Looking at Some Highlights of the DbContext API; 1.3 Working with the BreakAway Model; 1.4 Ensuring DbContext Instances Get Disposed;Chapter 2: Querying with DbContext; 2.1 Writing Queries with LINQ to Entities; 2.2 Querying All the Data from a Set; 2.3 Using LINQ for Sorting, Filtering, and More; 2.4 Finding a Single Object; 2.5 Querying Local Data; 2.6 Loading Related Data; 2.7 Querying Contents of a Collection Navigation Property;Chapter 3: Adding, Changing, and Deleting Entities; 3.1 Working with Single Entities; 3.2 Working with Relationships; 3.3 Working with Change Tracking; 3.4 Using Snapshot Change Tracking; 3.5 Enabling and Working with Change Tracking Proxies; 3.6 Fetching Entities Without Change Tracking;Chapter 4: Working with Disconnected Entities Including N-Tier Applications; 4.1 A Simple Operation on a Disconnected Graph; 4.2 Exploring the Challenges of N-Tier; 4.3 Understanding How DbContext Responds to Setting the State of a Single Entity; 4.4 Setting the State for Multiple Entities in an Entity Graph; 4.5 Building a Generic Approach to Track State Locally; 4.6 Tracking Individually Modified Properties;Chapter 5: Change Tracker API; 5.1 Change Tracking Information and Operations for a Single Entity; 5.2 Working with the State Property; 5.3 Working with Current, Original, and Database Values; 5.4 Working with Individual Properties; 5.5 Refreshing an Entity from the Database; 5.6 Change Tracking Information and Operations for Multiple Entities; 5.7 Using the Change Tracker API in Application Scenarios;Chapter 6: Validating with the Validation API; 6.1 Defining and Triggering Validation: An Overview; 6.2 Validating a Single Object on Demand with GetValidationResult; 6.3 Specifying Property Rules with ValidationAttribute Data Annotations; 6.4 Inspecting Validation Result Details; 6.5 Exploring More ValidationAttributes; 6.6 Validating Individual Properties on Demand; 6.7 Specifying Type-Level Validation Rules; 6.8 Understanding How EF Combines Validations; 6.9 Validating Multiple Objects; 6.10 Validating When Saving Changes;Chapter 7: Customizing Validations; 7.1 Overriding ValidateEntity in the DbContext; 7.2 Considering Different Ways to Leverage ValidateEntity; 7.3 Updating Data During SaveChanges; 7.4 Overriding SaveChanges When Validation Occurs; 7.5 Using the IDictionary Parameter of ValidateEntity; 7.6 Controlling Which Entities Are Validated in ValidateEntity;Chapter 8: Using DbContext in Advanced Scenarios; 8.1 Moving Between ObjectContext and DbContext; 8.2 Leveraging SQL Server Operators Exposed in SqlFunctions; 8.3 Querying Derived Types with DbSet; 8.4 Understanding the Interface Property Limitation; 8.5 Considering Automated Testing with DbContext; 8.6 Reducing Database Hits in Testing with IDbSet; 8.7 Accessing the Database Directly from DbContext; 8.8 Providing Multiple Targeted Contexts in Your Application;Chapter 9: What's Coming Next for Entity Framework; 9.1 Understanding Entity Framework's Version Numbers; 9.2 Entity Framework 5.0;
Synopsis
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 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, 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.
LC Classification Number
QA76.9.D343

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