System.Data.Objects.DataClasses Namespace

The System.Data.Objects.DataClasses namespace includes classes that are base classes for types that are defined in an Entity Data Model (EDM), base classes for the types that are returned by navigation properties, and classes that define attributes that map common language runtime (CLR) objects to types in the conceptual model.

Classes

ComplexObject

Base class for complex types.

EdmComplexPropertyAttribute

Attribute that indicates that the property represents a complex property.

EdmComplexTypeAttribute

Attribute that indicates that the class represents a complex type.

EdmEntityTypeAttribute

Attribute that indicates that the class represents an entity type.

EdmEnumTypeAttribute

Attribute indicating an enum type.

EdmFunctionAttribute

An attribute that, when applied to a method, indicates that the method is a proxy for a function in the conceptual model or storage model.

EdmPropertyAttribute

Base class for attributes that define how properties of types in the object layer are mapped to the properties of entity types or complex types in the conceptual model.

EdmRelationshipAttribute

Defines a relationship between two entity types based on an association in the conceptual model.

EdmRelationshipNavigationPropertyAttribute

Attribute that indicates that the property represents a navigation property.

EdmScalarPropertyAttribute

Attribute that indicates that the property represents a scalar property.

EdmSchemaAttribute

Attribute that indicates that the assembly contains classes that are mapped to entity types in a conceptual model.

EdmTypeAttribute

Base class for attributes that define how types in the object layer are mapped to entity types and complex types in the conceptual model.

EntityCollection<TEntity>

Represents a collection of objects on the "many" end of a relationship.

EntityObject

Base class for entity types that are generated by the Entity Data Model tools.

EntityReference

Base class that implements non-generic functionality for an EntityReference<TEntity>.

EntityReference<TEntity>

Represents a related end of an association with a multiplicity of zero or one.

RelatedEnd

Represents a base class that implements common functionality for a related end.

RelationshipManager

Used to track relationships between objects in the object context.

StructuralObject

Represents a class that contains the common methods need for a date object.

Interfaces

IEntityChangeTracker

Defines the facilities that are used by Object Services to track changes that are made to the properties of an object.

IEntityWithChangeTracker

Defines an entity type that implements change tracking.

IEntityWithKey

Defines an entity type that exposes an entity key.

IEntityWithRelationships

Defines an entity type with a relationship to one or more other entity type.

IRelatedEnd

Defines the end of a relationship.

Enums

RelationshipKind

Enumerates the type of the relationship between two or more entities.

Remarks

Entity Data Model tools use the conceptual model file to generate data classes that derive from classes in this namespace. For more information, see Object Services Overview (Entity Framework). Custom data classes can inherit from classes in this namespace. The System.Data.Objects.DataClasses namespace also includes interfaces that are used to implement custom data classes without inheriting from Entity Framework classes. For more information, see Customizing Objects.