The System.Workflow.Runtime namespace contains the WorkflowRuntime class, which you can use to configure, control, and subscribe to events for the workflow runtime engine associated with your application domain. The WorkflowInstance class provides a proxy to each workflow instance and lets you control the execution of a workflow. In addition to these classes, several classes having to do with workflow event queues and with exceptions thrown by the workflow runtime engine are contained in this namespace.

Classes

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	Class	Description
	CorrelationProperty	Represents a name and value pair used to correlate messages to specific receiving activities.
	CorrelationToken	Manages the subscriptions of the CorrelationProperty to the owner activities. This class cannot be inherited.
	CorrelationTokenCollection	Represents a collection of CorrelationToken classes. This class cannot be inherited.
	CorrelationTokenEventArgs	Contains the event data associated with the CorrelationToken. This class cannot be inherited.
	ServicesExceptionNotHandledEventArgs	Provides data for the WorkflowRuntime..::.ServicesExceptionNotHandled event.
	TimerEventSubscription	Represents a subscription to a timer event.
	TimerEventSubscriptionCollection	Represents an ordered list of TimerEventSubscription objects.
	WorkflowCompletedEventArgs	Provides data for the WorkflowCompleted event.
	WorkflowEnvironment	Represents the transactional environment of the workflow instance that is running on the current thread.
	WorkflowEventArgs	Provides data for workflow events.
	WorkflowInstance	Represents a workflow instance.
	WorkflowOwnershipException	The exception that is thrown when the workflow runtime engine attempts to load a workflow instance that is currently loaded by another workflow runtime engine instance. Additionally, this exception is thrown when the workflow runtime engine attempts to save a workflow after the ownership timeout that was specified while loading the workflow has expired.
	WorkflowQueue	Represents a workflow queue.
	WorkflowQueueInfo	Contains information about a WorkflowQueue.
	WorkflowQueuingService	Provides the services for management of WorkflowQueue objects.
	WorkflowRuntime	Represents the configurable execution environment provided by the workflow runtime engine for workflows.
	WorkflowRuntimeEventArgs	Provides data for the WorkflowRuntime..::.Started and WorkflowRuntime..::.Stopped events.
	WorkflowSuspendedEventArgs	Provides data for the WorkflowRuntime..::.WorkflowSuspended event.
	WorkflowTerminatedEventArgs	Provides data for the WorkflowRuntime..::.WorkflowTerminated event.

Interfaces

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	Interface	Description
	IPendingWork	Provides methods to participate in a work batch.
	IWorkBatch	Provides methods to add work to a work batch.

Enumerations

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	Enumeration	Description
	WorkflowStatus	Specifies the status of a workflow instance.