WorkflowChanges.TransientWorkflow Property

Definition

Namespace:

System.Workflow.ComponentModel

Assembly:

System.Workflow.ComponentModel.dll

Returns a cloned activity tree to which changes can be made and then applied to the running workflow instance.

public:
 property System::Workflow::ComponentModel::CompositeActivity ^ TransientWorkflow { System::Workflow::ComponentModel::CompositeActivity ^ get(); };

public System.Workflow.ComponentModel.CompositeActivity TransientWorkflow { get; }

member this.TransientWorkflow : System.Workflow.ComponentModel.CompositeActivity

Public ReadOnly Property TransientWorkflow As CompositeActivity

Property Value

CompositeActivity

A CompositeActivity that contains the cloned root activity for the workflow.

Examples

The following example demonstrates adding activities to the TransientWorkflow property. This example is from the Ordering State Machine SDK sample. For more information, see Ordering State Machine Sample.

// Create a new instance of the WorkflowChanges class for managing
// the in-memory changes to the workflow
WorkflowChanges changes = new WorkflowChanges(root);

// Create a new State activity to the workflow
StateActivity orderOnHoldState = new StateActivity();
orderOnHoldState.Name = "OrderOnHoldState";

// Add a new EventDriven activity to the State
EventDrivenActivity eventDrivenDelay = new EventDrivenActivity();
eventDrivenDelay.Name = "DelayOrderEvent";
orderOnHoldState.Activities.Add(eventDrivenDelay);

// Add a new Delay, initialized to 5 seconds
DelayActivity delayOrder = new DelayActivity();
delayOrder.Name = "delayOrder";
delayOrder.TimeoutDuration = new TimeSpan(0, 0, 5);
eventDrivenDelay.Activities.Add(delayOrder);

// Add a new SetState to the OrderOpenState
SetStateActivity setStateOrderOpen = new SetStateActivity();
setStateOrderOpen.TargetStateName = "OrderOpenState";
eventDrivenDelay.Activities.Add(setStateOrderOpen);

// Add the OnHoldState to the workflow
changes.TransientWorkflow.Activities.Add(orderOnHoldState);

' Create a new instance of the WorkflowChanges class for managing
' the in-memory changes to the workflow
Dim changes As New WorkflowChanges(root)

' Create a new State activity to the workflow
Dim orderOnHoldState As New StateActivity()
orderOnHoldState.Name = "OrderOnHoldState"

' Add a new EventDriven activity to the State
Dim eventDrivenDelay As New EventDrivenActivity()
eventDrivenDelay.Name = "DelayOrderEvent"
orderOnHoldState.Activities.Add(eventDrivenDelay)

' Add a new Delay, initialized to 5 seconds
Dim delayOrder As New DelayActivity()
delayOrder.Name = "delayOrder"
delayOrder.TimeoutDuration = New TimeSpan(0, 0, 5)
eventDrivenDelay.Activities.Add(delayOrder)

' Add a new SetState to the OrderOpenState
Dim setStateOrderOpen As New SetStateActivity()
setStateOrderOpen.TargetStateName = "OrderOpenState"
eventDrivenDelay.Activities.Add(setStateOrderOpen)

' Add the OnHoldState to the workflow
changes.TransientWorkflow.Activities.Add(orderOnHoldState)