SqlWorkflowInstanceStore.InstanceCompletionAction Property

Definition

Namespace:

System.Activities.DurableInstancing

Assembly:

System.Activities.DurableInstancing.dll

Specifies the action to be taken after a workflow instance completes. Possible values are "DeleteNothing" and "DeleteAll". The default value is "DeleteAll". If the property is set to "DeleteNothing", the persistence provider keeps all the instance data and metadata in the persistence database after the workflow instance completes. If the property is set to "DeleteAll", the persistence provider deletes all the instance data and metadata after the workflow instance completes.

public:
 property System::Activities::DurableInstancing::InstanceCompletionAction InstanceCompletionAction { System::Activities::DurableInstancing::InstanceCompletionAction get(); void set(System::Activities::DurableInstancing::InstanceCompletionAction value); };

public System.Activities.DurableInstancing.InstanceCompletionAction InstanceCompletionAction { get; set; }

member this.InstanceCompletionAction : System.Activities.DurableInstancing.InstanceCompletionAction with get, set

Public Property InstanceCompletionAction As InstanceCompletionAction

Property Value

InstanceCompletionAction

The action to be taken after a workflow completes.

Examples

The following code sample demonstrates using InstanceCompletionAction in a SqlWorkflowInstanceStore.

static void Main(string[] args)
{
    // Create service host.
    WorkflowServiceHost host = new WorkflowServiceHost(new CountingWorkflow(), new Uri(hostBaseAddress));

    // Add service endpoint.
    host.AddServiceEndpoint("ICountingWorkflow", new BasicHttpBinding(), "");

    // Define SqlWorkflowInstanceStoreBehavior:
    //   Set interval to renew instance lock to 5 seconds.
    //   Set interval to check for runnable instances to 2 seconds.
    //   Instance Store does not keep instances after it is completed.
    //   Select exponential back-off algorithm when retrying to load a locked instance.
    //   Instance state information is compressed using the GZip compressing algorithm.
    SqlWorkflowInstanceStoreBehavior instanceStoreBehavior = new SqlWorkflowInstanceStoreBehavior(connectionString);
    instanceStoreBehavior.HostLockRenewalPeriod = new TimeSpan(0, 0, 5);
    instanceStoreBehavior.RunnableInstancesDetectionPeriod = new TimeSpan(0, 0, 2);
    instanceStoreBehavior.InstanceCompletionAction = InstanceCompletionAction.DeleteAll;
    instanceStoreBehavior.InstanceLockedExceptionAction = InstanceLockedExceptionAction.AggressiveRetry;
    instanceStoreBehavior.InstanceEncodingOption = InstanceEncodingOption.GZip;
    host.Description.Behaviors.Add(instanceStoreBehavior);

    // Open service host.
    host.Open();

    // Create a client that sends a message to create an instance of the workflow.
    ICountingWorkflow client = ChannelFactory<ICountingWorkflow>.CreateChannel(new BasicHttpBinding(), new EndpointAddress(hostBaseAddress));
    client.start();

    Console.WriteLine("(Press [Enter] at any time to terminate host)");
    Console.ReadLine();
    host.Close();
}

Remarks

Possible values are "DeleteNothing" and "DeleteAll". The default value is "DeleteAll". If the property is set to "DeleteNothing", the persistence provider keeps all the instance data and metadata in the persistence database after the workflow instance completes. If the property is set to "DeleteAll", the persistence provider deletes all the instance data and metadata after the workflow instance completes.