Activity Class
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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

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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1

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