DurableTimerExtension Class

Represents an activity timer extension that can be persisted.


Namespace:  System.Activities.Statements
Assembly:  System.Activities (in System.Activities.dll)

public class DurableTimerExtension : TimerExtension, 
	IWorkflowInstanceExtension, IDisposable

The DurableTimerExtension type exposes the following members.

Public methodDurableTimerExtensionCreates a new instance of the DurableTimerExtension class.

Public methodCancelTimerRemoves a timer. (Inherited from TimerExtension.)
Public methodDisposeTerminates all registered timers.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetAdditionalExtensionsReturns an enumerator that iterates over the collection of timer extensions.
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Protected methodOnCancelTimerRemoves a timer object from the table of registered timers for the current workflow operation. (Overrides TimerExtension.OnCancelTimer(Bookmark).)
Protected methodOnRegisterTimerAdds a timer object that contains the specified time span and bookmark information to the table of registered timers for the current workflow operation. (Overrides TimerExtension.OnRegisterTimer(TimeSpan, Bookmark).)
Public methodRegisterTimerCreates a timer with the specified duration and associated. (Inherited from TimerExtension.)
Public methodSetInstanceEstablishes the specified workflow instance as the current instance.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

A DurableTimerExtension object can only be associated with a single workflow instance. If a DurableTimerExtension object is used with more than one workflow instance, an InvalidOperationException is thrown with the following message:

This TimerExtension has already been attached to a workflow instance.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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