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SqlWorkflowInstanceStore::InstanceCompletionAction Property

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.

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

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

Property Value

Type: System.Activities.DurableInstancing::InstanceCompletionAction
The action to be taken after a workflow 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.

The following code sample demonstrates using InstanceCompletionAction in a SqlWorkflowInstanceStore. This example is from the Built-in Configuration sample.


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();
}


.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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