O'Reilly logo

Entity Framework 4.1: Expert's Cookbook by Tim Rayburn, Devlin Liles

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Attaching objects with unit of work

In this recipe, we will be using multiple contexts to select the objects and update them, without having the knowledge of where they came from. This is a very common scenario when entities, or representations of entities, are being received by a web service or any other situation where the original context may have fallen out of scope.

Getting ready

We will be using the NuGet Package Manager to install the Entity Framework 4.1 assemblies.

The package installer can be found at http://nuget.org.

We will also be using a database for connecting to the data and updating it.

Open the Improving Detached Objects with Unit Of Work solution in the included source code examples.

How to do it...

  1. We start with a test that defines ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required