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SqlWorkflowInstanceStore.InstanceEncodingOption Property

Specifies a value that indicates whether the instance data must be compressed.

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

public InstanceEncodingOption InstanceEncodingOption { get; set; }

Property Value

Type: System.Activities.DurableInstancing.InstanceEncodingOption
The possible values are “None” and “GZip”. The default is “None”.

If the value is set to “GZip”, the instance data is compressed using the GZip algorithm.

The following code sample demonstrates using InstanceEncodingOption 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: 4.5.2, 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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