Windows Workflow Activities Definitions

If you are new to the new Windows Workflow Foundation then we are on the same boat. What are each of these out of the box activies and how to I use it. I like to document my findings here...

This blog will cover Flow Activities

Flow	Execution	Events	Web Services	State
IfElse	TransactionScope	EventDriven	WebServiceInput	SetState
While	Sequence	Listen	WebServiceOutput	State
CAG	Compensate	HandleExternalEvent	WebServiceFault	StateInitialization
Policy	SynchronizationScope	EventHandlingScope	InvokeWebService	StateFinalization
Replicator	Code	Delay
Throw	Parallel
Suspend	InvokeWorkflow
Terminate	CallExternalMethod
FaultHandler	CompensatableSequence
	CompensatableTransactionScope

IfElseActivity : Contains an ordered set of IfElseBranchActivity classes. Runs the first branch when the condition evaluates to true. The final branch is not required to have a condition, in which case it always evaluates to true.

WhileActivity : Runs a child activity iteratively as long as a certain condition is true.

ConditionedActivityGroup : Runs and re-executes child activities based on the evaluation of their when conditions. All rules are evaluated whenever required based on their data and state change dependencies. When the completion rule of the ConditionedActivityGroup evaluates to true, it immediately cancels any currently executing child activities and finishes.

PolicyActivity : Represents a collection of Rule class instances to be run as part of a workflow's execution as a single step/activity.

ReplicatorActivity : similar to a For Each statement in code. By default, a ReplicatorActivity is completed when all child instances have completed. You can override this behavior with a custom condition to use when the activity finishes. If this condition evaluates to true before all child instances have completed, then any running incomplete child instances will be canceled.

Throw : Raises exceptions declaratively, usually in response to exceptional conditions detected in a workflow.

Suspend : Stops the execution of the current workflow

Terminate : Immediately end all activities of a running workflow instance.

FaultHandler : It is a wrapper for other activities that perform the work that is done when the specified exception occurs.


References: http://msdn2.microsoft.com/en-us/library/ms733615.aspx