SqlWorkflowInstanceStore.InstanceCompletionAction 屬性

定義

命名空間:

System.Activities.DurableInstancing

組件:

System.Activities.DurableInstancing.dll

指定工作流程執行個體完成後要執行的動作。 可能的值為 "DeleteNothing" 和 "DeleteAll"。 預設值為 "DeleteAll"。 如果屬性設定為 "DeleteNothing"，持續性提供者會在工作流程執行個體完成後，保留持續性資料庫中所有的執行個體資料和中繼資料。 如果屬性設定為 "DeleteAll"，持續性提供者會在工作流程執行個體完成後，刪除所有的執行個體資料和中繼資料。

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

屬性值

InstanceCompletionAction

工作流程執行個體完成後要執行的動作。

範例

下列程式碼範例將示範如何在 SqlWorkflowInstanceStore 中使用 InstanceCompletionAction。

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();
}

備註

可能的值為 "DeleteNothing" 和 "DeleteAll"。 預設值為 "DeleteAll"。 如果屬性設定為 "DeleteNothing"，持續性提供者會在工作流程執行個體完成後，保留持續性資料庫中所有的執行個體資料和中繼資料。 如果屬性設定為 "DeleteAll"，持續性提供者會在工作流程執行個體完成後，刪除所有的執行個體資料和中繼資料。