The core components of Microsoft Sync Framework can be used to manage metadata and to create synchronization providers and applications. Some types in this namespace are also used by Microsoft Sync Services for ADO.NET.

Classes

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	Class	Description
	ChangeBatch	Represents metadata for a set of changes. This class cannot be inherited.
	ChangeBatchBase	When overridden by a derived class, represents metadata for a set of changes.
	ChangeBatchIsReadOnlyException	The exception that is thrown when an item change or conflict is added to a ChangeBatch object that is read-only.
	ChangeBatchNeedsKnowledgeException	The exception that is thrown when a change batch object does not contain learned knowledge.
	ChangeCountMismatchException	The exception that is thrown by a change applier when the number of destination item versions does not match the number of source item changes.
	ChangeDataAdapter	An abstract class that, when overridden in a derived class, converts data between a managed provider and an unmanaged provider.
	ChangeNeedsKnowledgeException	The exception that is thrown when an ItemChange object does not contain required knowledge.
	ChangeNotExpectedException	The exception that is thrown by a change applier when the order of destination item versions or change unit versions is not the same as the order of source item changes or change unit changes.
	ChangeUnitChange	Represents a change to a change unit contained in an item. This class cannot be inherited.
	ChangeUnitCountMismatchException	The exception that is thrown by a change applier when the number of change units in a destination item version does not match the number of change units in the corresponding source item change.
	ChangeVersionNotInKnowledgeException	The exception that is thrown by a change applier when the version of a source item change is not contained in the associated knowledge.
	ClockVector	Represents a clock vector in a knowledge structure. This class cannot be inherited.
	ClockVectorElement	Represents a clock vector element of a knowledge structure. This class cannot be inherited.
	CreateFailuresMustBeForEntireItemException	The exception that is thrown by SaveChangeWithChangeUnitsContext or LoadChangeContext when a recoverable error is recorded for a change unit change when the change represents an item creation.
	DuplicateItemException	The exception that is thrown when an attempt is made to add an entry to a replica key map, and either the replica ID or the replica key already exists in the map.
	FilterInfo	When overridden in a derived class, represents information about a filter that can be used to control which changes are included in a ChangeBatch object.
	ForgottenKnowledge	Represents knowledge that has been forgotten because of tombstone cleanup.
	FullEnumerationChangeBatch	Represents metadata for a set of changes for a full enumeration. This class cannot be inherited.
	FullEnumerationNeededEventArgs	Provides data for the SyncCallbacks.FullEnumerationNeeded event.
	IncompleteReplicaKeyMapException	The exception that is thrown by KnowledgeBuilder when KnowledgeBuilder.ReplicaKeyMap is found to be incomplete in some way.
	InvalidFeedException	The exception that is thrown when a FeedSync feed is invalid.
	InvalidKnowledgeVersionException	The exception that is thrown when KnowledgeBuilder is passed a knowledge version that is not supported by KnowledgeBuilder.
	InvalidOrderException	The exception that is thrown when an attempt is made to create a clock vector that contains clock vector elements that are not correctly ordered.
	InvalidReplicaKeyException	The exception that is thrown when a clock vector is added to a KnowledgeBuilder object, but the clock vector contains an element that contains a replica key that is not found in KnowledgeBuilder.ReplicaKeyMap.
	InvalidSyncTimeException	The exception that is thrown when a FeedClockVectorElement object is created by using an invalid SyncTime value.
	ItemChange	Represent a change to an item. This class cannot be inherited.
	ItemChangeSkippedEventArgs	Provides data for the ItemChangeSkipped event.
	ItemChangeUnitOverride	Represents a change unit to exclude from a knowledge object. This class cannot be inherited.
	ItemChangingEventArgs	Provides data for the ItemChanging event.
	ItemConflictingEventArgs	Provides data for the ItemConflicting event.
	ItemDataModifiedConcurrentlyException	The exception that is thrown by a synchronization provider when item data changes unexpectedly.
	ItemHasChangeUnitsException	The exception that is thrown when an attempt is made to get or set the ChangeVersion property on an ItemChange object that contains change units.
	ItemHasNoChangeUnitsException	The exception that is thrown when a method is called that requires an item to have change units, but the item does not have change units.
	ItemHasNoDataException	The exception that is thrown when a provider tries to load data for an item that does not exist.
	ItemHasNoVersionDataException	The exception that is thrown when an ItemChange object does not have the version data that is requested.
	ItemListFilterInfo	Represents information about a filter that can be used to control which changes are included in a ChangeBatch object.
	ItemMustExistException	The exception that is thrown when a provider reports that an item does not exist, although the creation version of the item is contained in the knowledge from that provider.
	ItemNotInFeedMetadataException	The exception that is thrown when an attempt is made to load item data from a FeedSync feed when the item does not exist in the feed.
	ItemOverride	Represents an item to exclude from a knowledge object. This class cannot be inherited.
	ItemRangeOverride	Represents an item ID range to exclude from a knowledge object. This class cannot be inherited.
	KnowledgeBuilder	Reconstructs a SyncKnowledge object from its constituent parts.
	KnowledgeDecreasedUnexpectedlyException	The exception that is thrown when synchronization knowledge decreases unexpectedly.
	KnowledgeInspector	Takes a snapshot of a SyncKnowledge object and provides methods for inspecting the details of the knowledge.
	KnowledgeSyncProvider	When overridden by a derived class, represents a synchronization provider that uses knowledge to perform synchronization.
	KnowledgeSyncProviderConfiguration	Represents configuration information for a KnowledgeSyncProvider object.
	LoadChangeContext	When overridden by a derived class, represents information about a change to be loaded from the item store.
	NegativeRangeException	The exception that is thrown by KnowledgeBuilder.BuildSyncKnowledge when an ItemRangeOverride object that is used to build the knowledge contains a ClockVector property that does not contain KnowledgeBuilder.ScopeClockVector.
	NotifyingChangeApplier	Represents a change applier that examines a set of changes from a source provider, detects conflicts with items in the destination replica, and makes calls to a registered change applier target to save changes or save conflicts as appropriate.
	NotifyingChangeApplierIChangeDataRetrieverAdapter	Represents an adapter that can convert between a managed IChangeDataRetriever and an unmanaged ISynchronousDataRetriever.
	ObjectNeedsStateException	The exception that is thrown when a SyncSessionContext object is required and none is specified.
	Override	When overridden by a derived class, represents something that is excluded from a knowledge object.
	RangeOutOfOrderException	The exception that is thrown when a range of items is not in the expected order, or when a range override is specified incorrectly.
	RecoverableErrorData	Represents information about a recoverable error. This class cannot be inherited.
	ReplicaKeyMap	Represents a mapping between replica keys and replica IDs.
	ReplicaNotFoundException	The exception that is thrown when a specified replica cannot be found in a ReplicaKeyMap object.
	SaveChangeContext	Represents information about a change to be saved to the item store.
	SaveChangeWithChangeUnitsContext	Represents information about a change to be saved to the item store when the change contains change units.
	SyncAbortedException	The exception that is thrown when the synchronization session is canceled.
	SyncCallbacks	Represents application callbacks that are used to dispatch a synchronization event.
	SyncException	The exception that is thrown when an error occurs during synchronization.
	SyncGlobalId	Represents an identifier for an item that is unique throughout the synchronization community.
	SyncId	Represents an identifier for an item, change unit, or replica.
	SyncIdFormat	Represents the format of a synchronization entity ID. This class cannot be inherited.
	SyncIdFormatGroup	Represents the format schema for the group of IDs that are used to identify entities in a synchronization session. This class cannot be inherited.
	SyncIdFormatMismatchException	The exception that is thrown when an ID format is specified that is not in the format that is expected.
	SyncInvalidOperationException	The exception that is thrown when a method call is invalid for the current state of the object.
	SyncKnowledge	Represents knowledge a replica has about its item store.
	SyncOperationStatistics	Represents statistics about a bidirectional synchronization session.
	SyncOrchestrator	Initiates and controls synchronization sessions.
	SyncOrchestratorStateChangedEventArgs	Provides data for the StateChanged event.
	SyncProvider	When overridden by a derived class, represents a synchronization provider.
	SyncRuntimeInternalErrorException	The exception that is thrown when an internal error has occurred in Sync Framework.
	SyncSessionContext	Represents information about the current synchronization session.
	SyncSessionStatistics	Represents statistics about a single, unidirectional synchronization session.
	SyncStagedProgressEventArgs	Provides data for the SessionProgress event.
	SyncVersion	Represents a version for an item or a change unit.
	UnmanagedSyncProviderWrapper	Represents a managed object that wraps an unmanaged synchronization provider.
	UserLoadChangeContext	Represents information about a change to be loaded from the item store. This class cannot be inherited.

Interfaces

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	Interface	Description
	IChangeDataRetriever	Represents the mechanism by which the destination provider retrieves item data from the source provider.
	IChangeDataRetrieverAdapter	When overridden, adapts a change data retriever between a managed and unmanaged representation.
	IClockVector	Represents a clock vector that defines the changes that are contained in a knowledge structure.
	IClockVectorElement	When overridden, represents an element of a clock vector that is contained in a knowledge structure.
	INotifyingChangeApplierTarget	Represents an object that can save item changes to a replica.

Enumerations

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	Enumeration	Description
	ChangeKind	Represents the type of change that is made to an item.
	ConflictResolutionAction	Represents actions that are taken to resolve a specific conflict.
	ConflictResolutionPolicy	Represents the options for the conflict resolution policy to use for the synchronization session.
	FilterType	Represents the type of a synchronization filter.
	FullEnumerationAction	Represents the action to be taken by an application in response to SyncCallbacks.FullEnumerationNeeded.
	SaveChangeAction	Represents the type of action that is indicated by a change.
	SessionProgressStage	Represents the stages of a synchronization session.
	SyncDirectionOrder	Indicates the direction of synchronization. For two-way synchronizations this also includes the order in which the synchronizations are performed.
	SyncOrchestratorState	Represents the possible states of a SyncOrchestrator object.
	SyncProviderPosition	Represents the position of a provider, relative to the other provider in the synchronization session.