Activity Class

Creates an activity to do synchronous or asynchronous batch work that can use COM+ services without needing to create a COM+ component. This class cannot be inherited.

Namespace: System.EnterpriseServices
Assembly: System.EnterpriseServices (in system.enterpriseservices.dll)

public sealed class Activity
/** @attribute ComVisibleAttribute(false) */ 
public final class Activity
public final class Activity
Not applicable.

The context associated with the activity is completely determined by a ServiceConfig object.

The following code example demonstrates how to use the Activity class and use the synchronization service.

class SvcClass: IServiceCall 
    static int callNumber = 0;
    public void OnCall()
        System.Guid contextID = ContextUtil.ContextId;
        Console.WriteLine("This is call number "+ callNumber.ToString()); 
        System.TimeSpan sleepTime = new System.TimeSpan(0,0,0,10); 
class EnterpriseServicesActivityClass
static void Main(string[] args)
        ServiceConfig serviceConfig = new ServiceConfig();
        serviceConfig.Synchronization = SynchronizationOption.Required;
        serviceConfig.ThreadPool = ThreadPoolOption.MTA;
        SvcClass serviceCall = new SvcClass();
    Activity activity = new Activity(serviceConfig); 
        Console.WriteLine("Waiting for asynchronous calls to terminate");


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1