CoreData Namespace

The CoreData namespace provides object-graph serialization and persistence.

Classes

NSAsynchronousFetchRequest	Class that represents an asynchronous fetch request.
NSAsynchronousFetchResult	Class that represents the result of an asynchronous fetch request.
NSAtomicStore	A base class for 'atomic stores,' which can be used to store custom file formats in Core Data.
NSAtomicStoreCacheNode	Represents a single record in a Core Data atomic store.
NSAttributeDescription	Describes an attribute of an NSEntityDescription object.
NSBatchDeleteRequest	A NSPersistentStoreRequest that performs a batch delete.
NSBatchDeleteResult	The results of a T:CoreData.NSBatchDeleteQuery.
NSBatchUpdateRequest	Class that represents a request for a batch update.
NSBatchUpdateResult	Class that represents the result of an batch update request.
NSConstraintConflict
NSCoreDataCoreSpotlightDelegate
NSEntityDescription	Describes the value relationships between an in-memory object and its persistent representation.
NSEntityMapping	Specifies the mapping between an in-memory object and its persistent representation.
NSEntityMigrationPolicy	Customizes the migration process during entity mapping.
NSExpressionDescription	Descriptor for a fetch result column that does not appear in the source, such as a sum or a minimum of a column in the source.
NSFetchedPropertyDescription	Holds "fetched properties," that allow the developer to specify related objects via a weak unidirectional relationship in a fetch request.
NSFetchedResultsController	Controller object for Core Data fetch requests; generally used to provide data for a UITableView.
NSFetchedResultsControllerDelegate	Delegate object for NSFetchedResultsController objects, provides methods relating to fetch results adding, removing, moving, or updating objects.
NSFetchedResultsControllerDelegate_Extensions	Extension methods to the INSFetchedResultsControllerDelegate interface to support all the methods from the NSFetchedResultsControllerDelegate protocol.
NSFetchedResultsSectionInfo	Holds data relating to section objects created by a NSFetchedResultsController.
NSFetchIndexDescription
NSFetchIndexElementDescription
NSFetchRequest	Holds search criteria used to retrieve data from a persistent store.
NSFetchRequestExpression	Represents an expression that fetches results in a managed object context.
NSIncrementalStore	Supports the use of persistent stores that are loaded and saved incrementally, allowing for larger and shared datasets.
NSIncrementalStoreNode	A concrete class that represents basic nodes in a NSIncrementalStore.
NSManagedObject	A class that can be managed by a managed object context. Should have a correspondence to domain model classes, even if they are not direct subtypes.
NSManagedObjectChangeEventArgs	Provides data for the event.
NSManagedObjectContext	A collection of related managed objects that create aninternally-consistent view of one or more persistent stores.
NSManagedObjectContext.Notifications	Notification posted by the NSManagedObjectContext class.
NSManagedObjectID	A universal identifier of a Core Data managed object. Works across object contexts and applications.
NSManagedObjectModel	A schema describing a graph of entities used by the application.
NSMappingModel	Holds mappings between a source and destination managed object model.
NSMergeConflict	Models conflicts that can occur when saving changes.
NSMergePolicy	Strategy for resolving conflicts between in-memory objects and those in persistent stores.
NSMigrationManager	Allows migration from one persistent store to another.
NSPersistentContainer	Creates and manages a Core Data stack.
NSPersistentHistoryChange
NSPersistentHistoryChangeRequest
NSPersistentHistoryResult
NSPersistentHistoryToken
NSPersistentHistoryTransaction
NSPersistentStore	Abstract base class for Core Data persistent stores.
NSPersistentStoreAsynchronousResult	Class that represents the results of an aysnchronous request that was made of a persistent data store.
NSPersistentStoreCoordinator	Mediates between a persistent store and the managed object context or contexts.
NSPersistentStoreCoordinator.Notifications	Notification posted by the NSPersistentStoreCoordinator class.
NSPersistentStoreCoordinatorStoreChangeEventArgs	Provides data for the event.
NSPersistentStoreDescription	Descriptor for a persistent store inside a persistent container.
NSPersistentStoreRequest	Criteria used to retrieve data from or save data in a persistent store.
NSPersistentStoreResult	Class that represents the result of request that was made of a persistent data store.
NSPropertyDescription	Defines properties of an entity in a managed objectmodel. The equivalent of an instance property.
NSPropertyMapping	Maps a property between source and destination entities.
NSQueryGenerationToken	Controls whether and how a managed object context pins itself to database transactions.
NSRelationshipDescription	Describes the relationships of a NSEntityDescription object.
NSSaveChangesRequest	A collection of changes to be made by an object store.
UserInfo	Contains Core Data error information.
UserInfoKeys	Contains keys for error information that Core Data stores in a dictionary.

Interfaces

INSFetchedResultsControllerDelegate	Interface representing the required methods (if any) of the protocol NSFetchedResultsControllerDelegate.
INSFetchedResultsSectionInfo	Interface representing the required methods (if any) of the protocol NSFetchedResultsSectionInfo.
INSFetchRequestResult

Enums

MigrationErrorType	Enumerates error codes that can be encountered while migrating stores.
NSAttributeType	An enumeration whose values define the valid types for NSAttributeType objects.
NSBatchDeleteRequestResultType	Enumerates the form of the result of a NSBatchDeleteRequest.
NSBatchUpdateRequestResultType	Enumerates the kind of results that can be returned from a batched update request.
NSDeleteRule	An enumeration whose values specify cascade options after deletion of an object.
NSEntityMappingType	Enumerates specific types of entity mapping.
NSFetchedResultsChangeType	Enumerates kinds of batch requests.
NSFetchIndexElementType	Enumerates index types.
NSFetchRequestResultType	Enumerates possible result types from a fetch.
NSManagedObjectContextConcurrencyType	Enumerates types of concurrenty patterns that can be used by a NSManagedObjectContext.
NSMergePolicyType	Enumerates policies for merging.
NSPersistentHistoryChangeType
NSPersistentHistoryResultType
NSPersistentStoreRequestType	Constants defining the types of a fetch request.
NSPersistentStoreUbiquitousTransitionType	Enumerates valid keys for the user information dictionary used in StoresWillChangeNotification and StoresDidChangeNotification.
NSSnapshotEventType	Enumerates reasons that a managed object may need to reinitialize certain values when it awakes.
ObjectGraphManagementErrorType	Enumerates error codes that can be encountered while working with object graphs.
PersistentStoreErrorType	Enumerates error codes that can be encountered while working with persistent stores.
ValidationErrorType	Enumerates errors that can be encountered during validation.

Remarks

In general, Xamarin developers should prefer the use of portable database technologies for persistence.