TimerEventSubscriptionCollection.Add(TimerEventSubscription) Method
Definition
Important
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Adds a TimerEventSubscription to the timer queue.
public:
void Add(System::Workflow::Runtime::TimerEventSubscription ^ item);public void Add (System.Workflow.Runtime.TimerEventSubscription item);member this.Add : System.Workflow.Runtime.TimerEventSubscription -> unitPublic Sub Add (item As TimerEventSubscription)Parameters
The TimerEventSubscription to add to the timer queue.
Exceptions
item is a null reference (Nothing in Visual Basic).
Remarks
Adds the TimerEventSubscription to the timer queue. Subscriptions in the queue are positioned based on their TimerEventSubscription.ExpiresAt values; those with smaller values are positioned in front of those with larger values. If the new subscription is added at the beginning of the queue, WorkflowSchedulerService.Cancel is called to cancel the timer event that was previously at the beginning of the queue and WorkflowSchedulerService.Schedule(WaitCallback, Guid, DateTime, Guid) is called to schedule the new timer event. Add locks the TimerEventSubscriptionCollection before adding the new subscription and is, therefore, thread safe.
