The Object Services Overview (Entity Framework).namespace includes classes that provide access to the core functionality of Object Services. These classes enable you to query, insert, update, and delete data by working with strongly typed CLR objects that are instances of entity types. Object Services supports both Language-Integrated Query (LINQ) and Entity SQL queries against types that are defined in an Entity Data Model (EDM). Object Services materializes the returned data as objects and propagates object changes back to the data source. It also provides facilities for tracking changes, binding objects to controls, and handling concurrency. For more information, see
Represents a cached LINQ to Entities query.
Provides access to the current values of object data.
Provides access to the original values of object data. The DbUpdatableDataRecord implements methods that allow updates to the original values of an object.
Provides common language runtime (CLR) methods that expose conceptual model canonical functions in LINQ to Entities queries. For information about canonical functions, see Canonical Functions.
Provides facilities for querying and working with entity data as objects.
Defines options that affect the behavior of the ObjectContext.
Contains the data for the ObjectMaterialized event.
Represents a query parameter that is passed to an object query.
Implements common functionality for queries against a conceptual model using both LINQ to Entities and ObjectQuery<T>.
Represents a typed query against a conceptual model in a given object context.
Represents a class that implements IEnumerable and IDisposable. Instance of this class is returned from ObjectQuery.Execute method.
Represents the result of an ObjectQuery<T> as an enumerable collection of objects.
Represents a typed entity set that is used to perform create, read, update, and delete operations.
Represents either an entity, entity stub or relationship.
Maintains object state and identity management for entity type instances and relationship instances.
Provides access to the original values of object data.
This class helps resolve proxy types that were created for persistence-ignorant data classes to the actual types of persistence-ignorant objects.
Provides functionality to allow making modifications to a set of data objects.
Specifies how objects being loaded into the object context are merged with objects already in the object context.
Specifies whether property changes made to objects tracked by Object Services are kept or replaced with property values from the data source.
Specifies the behavior of the object context when the SaveChanges(SaveOptions) method is called.