Book Image

Entity Framework Core Cookbook - Second Edition

By : Ricardo Peres
Book Image

Entity Framework Core Cookbook - Second Edition

By: Ricardo Peres

Overview of this book

Entity Framework is a highly recommended Object Relation Mapping tool used to build complex systems. In order to survive in this growing market, the knowledge of a framework that helps provide easy access to databases, that is, Entity Framework has become a necessity. This book will provide .NET developers with this knowledge and guide them through working efficiently with data using Entity Framework Core. You will start off by learning how to efficiently use Entity Framework in practical situations. You will gain a deep understanding of mapping properties and find out how to handle validation in Entity Framework. The book will then explain how to work with transactions and stored procedures along with improving Entity Framework using query libraries. Moving on, you will learn to improve complex query scenarios and implement transaction and concurrency control. You will then be taught to improve and develop Entity Framework in complex business scenarios. With the concluding chapter on performance and scalability, this book will get you ready to use Entity Framework proficiently.
Table of Contents (15 chapters)
Entity Framework Core Cookbook - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Strongly typed bulk operations


Entity Framework Core 1.0 supports two query options:

  • SQL

  • LINQ

LINQ, of course, is the preferred query language in the .NET world. It has the great advantage that it is compiled to .NET and is strongly typed, meaning most errors are detected at compile time. The drawback is that it cannot be used for anything other than querying, that is, it cannot do updates, inserts, or deletes.

However, because of the great extensibility hooks that are present in Entity Framework Core, it is indeed possible to turn strongly typed LINQ queries into updates and deletes. In particular, Pomelo Foundation has implemented a library for doing just that.

Getting ready

We will be using the NuGet Package Manager to install the Entity Framework Core 1 package, Microsoft.EntityFrameworkCore. We will also be using a SQL Server database to store the data, so we will also need Microsoft.EntityFrameworkCore.SqlServer. We will also need Pomelo.EntityFrameworkCore.Lolita.SqlServer for the strongly...