SqlWorkflowInstanceStore.InstanceEncodingOption Properti

Definisi

Ruang nama:

System.Activities.DurableInstancing

Rakitan:

System.Activities.DurableInstancing.dll

Menentukan nilai yang menunjukkan apakah data instans harus dikompresi.

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

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

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

Public Property InstanceEncodingOption As InstanceEncodingOption

Nilai Properti

InstanceEncodingOption

Nilai yang mungkin adalah "None" dan "GZip". Defaultnya adalah "Tidak Ada".

Contoh

Sampel kode berikut menunjukkan penggunaan InstanceEncodingOption dalam 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();
}

Keterangan

Jika nilai diatur ke "GZip", data instans dikompresi menggunakan algoritma GZip.