How to: Execute a Query that Returns a Collection of Primitive Types
This topic provides examples of how to execute queries that return a collection of primitive types. To return just a single object, use one of the following methods on top of your query: First, FirstOrDefault, Single, SingleOrDefault.
The same example is shown using each of the following Entity Framework query technologies:
The example in this topic is based on the Adventure Works Sales Model. To run the code in this topic, you must have already added the Adventure Works Sales Model to your project and configured your project to use the Entity Framework. For more information, see How to: Use the Entity Data Model Wizard (Entity Framework) or How to: Manually Configure an Entity Framework Project and How to: Manually Define an Entity Data Model (Entity Framework).
The following is the LINQ to Entities example.
The following is the Entity SQL example.
The following is the query builder method example.