Context submitchanges not updating
We will be using the same console application that we created in the previous article, so make sure you have read the previous article before we continue.
We will be adding three methods to the console application: add Customer(), delete Customer() and modify Customer() Create and Add Objects in Entity Framework 4.0 In order to add new objects to the Entity Set, you must create an instance of an Entity type and add the object to the object context.
Instances of these types of classes are known as entities, and the classes themselves, entity classes.
We at Dot Net Curry are very excited to announce the The Absolutely Awesome Book on C# and . This is a 500 pages concise technical e Book available in PDF, e Pub (i Pad), and Mobi (Kindle). NET, to have a solid grasp of the latest in C# and . In a previous article, we saw how to Create an Entity Framework Model and Use it in Multiple Projects.In this article, we will see how to Add, Update and Delete objects in our conceptual model and push the changes to the underlying database.2.2 The Data Context The Data Context is the main conduit by which you retrieve objects from the database and submit changes back.
You use it in the same way that you would use an ADO. In fact, the Data Context is initialized with a connection or connection string you supply.Only fields and properties declared as columns will be persisted to or retrieved from the database.