System.Workflow.Activities Namespace

Provides classes related to Windows Workflow Foundation activities.

Classes

ActiveDirectoryRole	Represents an Active Directory role in a Windows Workflow Foundation hosting environment. This class cannot be inherited.
ActiveDirectoryRoleFactory	A factory class for creating ActiveDirectoryRole objects from Windows NT aliases, email addresses, and security identifiers (SIDs).
CallExternalMethodActivity	Defines a workflow communication activity that is used to call a method on a local service. This activity is used to send data from the workflow to the host through the local service.
CallExternalMethodActivityValidator	Verifies that the CallExternalMethodActivity class is configured correctly.
ChannelToken	Used by a SendActivity to associate itself with a client-side channel.
CodeActivity	Runs the code-beside method associated with an activity. This class cannot be inherited.
CodeCondition	Defines a condition that guards/drives the execution of a certain activity within a workflow definition. It has an event of type ConditionalEventArgs to return the result of the condition.
CompensatableSequenceActivity	Defines a compensatable version of the SequenceActivity activity. This class cannot be inherited.
ConditionalEventArgs	Returns result information for the CodeCondition class. This class cannot be inherited.
ConditionedActivityGroup	Provides the definition of a constraint-based execution context for a set of child activities.
ContextToken	Represents a token that can be used to specify the context that should be used to correlate the exchange between a ReceiveActivity activity and the client that the activity is communicating with.
CorrelationAliasAttribute	Overrides the correlation parameter value when the correlation value must be obtained from a parameter other than that indicated by the CorrelationParameterAttribute. This class cannot be inherited.
CorrelationInitializerAttribute	Indicates the method or event on an ExternalDataExchange interface that initializes the correlation value. This class cannot be inherited.
CorrelationParameterAttribute	Indicates the name of the parameter used for correlation in the methods and events defined on an ExternalDataExchange interface. This class cannot be inherited.
DelayActivity	Provides the logic to establish a timer and to wait, asynchronously, for timer's expiration. This class cannot be inherited.
EventDeliveryFailedException	The exception that is thrown when an event that is raised from the host cannot be delivered to the workflow instance. Typically the event is raised from an ExternalDataExchangeService on a workflow instance. This class cannot be inherited.
EventDrivenActivity	Wraps an Activity whose execution is initialized by an event. This class cannot be inherited.
EventHandlersActivity	A composite activity that contains a collection of event handlers. It is typically used where a collection of events must be handled. Each event is handled by one EventDrivenActivity, which is part of EventHandlersActivity.
EventHandlingScopeActivity	Enables event handling with the execution of the child activities. This class cannot be inherited.
EventQueueName	Represents the name of a queue associated with an event on a WorkflowInstance. This class cannot be inherited.
ExternalDataEventArgs	Represents the data sent when an event is raised using the HandleExternalEventActivity activity.
ExternalDataExchangeAttribute	Marks an interface as a local service interface. This class cannot be inherited.
ExternalDataExchangeService	Represents a service that must be added to the workflow run-time engine for local services communications to be enabled. Local service implementations are required to be added to the ExternalDataExchangeService for these services to be properly initialized and registered.
ExternalDataExchangeServiceSection	Represents a configuration section that allows you to specify, in a configuration file, a set of services to be added to an instance of ExternalDataExchangeService.
HandleExternalEventActivity	Defines a workflow communication activity that is used to handle an event that is raised by a local service.
HandleExternalEventActivityValidator	Verifies that the HandleExternalEventActivity class is configured correctly.
IfElseActivity	Conditionally runs one of two or more activities of type IfElseBranchActivity. This class cannot be inherited.
IfElseBranchActivity	Represents a branch of an IfElseActivity. This class cannot be inherited.
InvokeWebServiceActivity	Invokes a Web service through a proxy class, which passes and receives parameters as specified. This class cannot be inherited.
InvokeWebServiceEventArgs	Contains event data used to invoke a Web service. This class cannot be inherited.
InvokeWorkflowActivity	Asynchronously runs one workflow from another. This class cannot be inherited.
ListenActivity	Makes the workflow wait for any one of several possible events before the activity proceeds. This class cannot be inherited.
MessageEventSubscription	Creates a message event subscription to route messages to the appropriate workflow instance.
OperationInfo	Represents the information for a contract operation defined in a workflow service.
OperationInfoBase	The base class used for storing information for a contract operation defined in a workflow service.
OperationParameterInfo	Contains information about an operation parameter.
OperationParameterInfoCollection	A collection of OperationParameterInfo objects.
OperationValidationEventArgs	Provides data for the OperationValidation event.
ParallelActivity	Runs a set of child activities at the same time. This class cannot be inherited.
PolicyActivity	Represents a collection of Rule class instances to be run as part of a workflow's execution as a single step or activity.
ReceiveActivity	Service activity that implements an operation defined by a Windows Communication Foundation (WCF) service contract.
ReplicatorActivity	Runs multiple instances of a child activity.
ReplicatorChildEventArgs	Contains event arguments for the ReplicatorActivity activity handlers called at initialization of child Activity instances in addition to when the child Activity instances are finished.
SendActivity	Client activity that models the synchronous invocation of a Windows Communication Foundation (WCF) service operation.
SendActivityEventArgs	Provides information for the BeforeSend and AfterResponse events.
SequenceActivity	Runs a set of child activities according to a single defined ordering.
SequentialWorkflowActivity	Represents a workflow that executes activities sequentially.
SetStateActivity	Provides the transition to a StateActivity in a state machine workflow. This class cannot be inherited.
SetStateEventArgs	Represents a class that is used as an argument to set the state of a StateMachineWorkflowActivity.
StateActivity	Represents a state in a StateMachineWorkflowActivity.
StateActivityValidator	Represents a class that verifies whether a StateActivity class is configured correctly.
StateFinalizationActivity	Represents an activity that executes contained activities before transitioning to another state in a state machine workflow. This class cannot be inherited.
StateInitializationActivity	Acts as a container to a group of activities that is executed when the StateActivity starts running. This class cannot be inherited.
StateMachineWorkflowActivity	Serves as the root container for state machine workflows. Contains event-driven activities and states.
StateMachineWorkflowInstance	Represents a class that manages the current instance of a StateMachineWorkflowActivity. This class cannot be inherited.
TypedOperationInfo	An OperationInfo object that inherits from OperationInfoBase used for the service operation information of the SendActivity and ReceiveActivity activities. Note that this operation information must be based on a CLR type.
WebServiceFaultActivity	Enables sending a fault to the Web service client from the workflow. This class cannot be inherited.
WebServiceInputActivity	Enables receiving data from a Web service in a workflow. This class cannot be inherited.
WebServiceOutputActivity	Enables sending data to a Web service from within a workflow. This class cannot be inherited.
WebWorkflowRole	Represents a Workflow role that is backed by a RoleProvider.
WhileActivity	Runs a child activity iteratively as long as a certain condition is true.
WorkflowAuthorizationException	The exception that is thrown when role validation fails due to a specified identity that is not contained in the WorkflowRoleCollection.
WorkflowRole	The abstract base class from which workflow roles are derived.
WorkflowRoleCollection	Represents a collection of WorkflowRole objects. This class cannot be inherited.
WorkflowServiceAttributes	Builds the service behavior for the workflow service that it decorates.
WorkflowServiceAttributesDynamicPropertyValidator	The property validator used by the WorkflowServiceAttributesProperty.
WorkflowSubscriptionService	Provides methods for a subscription service to manage subscriptions for a workflow runtime.
WorkflowWebService	Represents the base class for all workflow Web services.

Interfaces

IEventActivity

Provides methods and properties that event-driven activities must derive from, to subscribe to events.

Enums

ExecutionType

Specifies the execution mode for activities.