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ExternalDataEventArgs Class

Note: This API is now obsolete.

Represents the data sent when an event is raised using the HandleExternalEventActivity activity.

System.Object
  System.EventArgs
    System.Workflow.Activities.ExternalDataEventArgs

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

[SerializableAttribute]
[ObsoleteAttribute("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
public class ExternalDataEventArgs : EventArgs

The ExternalDataEventArgs type exposes the following members.

  NameDescription
Public methodExternalDataEventArgs()Initializes a new instance of the ExternalDataEventArgs class.
Public methodExternalDataEventArgs(Guid)Initializes a new instance of the ExternalDataEventArgs class using the instance identifier of the workflow.
Public methodExternalDataEventArgs(Guid, IPendingWork, Object)Initializes a new instance of the ExternalDataEventArgs class.
Public methodExternalDataEventArgs(Guid, IPendingWork, Object, Boolean)Initializes a new instance of the ExternalDataEventArgs class.
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  NameDescription
Public propertyIdentityGets or sets the identity of the user that raised the event.
Public propertyInstanceIdGets or sets the workflow instance identifier for the workflow instance that contains the HandleExternalEventActivity that is expected to handle the event.
Public propertyWaitForIdleGets or sets a value that indicates whether the event should be raised immediately, or if the workflow should go idle before raising the event.
Public propertyWorkHandlerGets or sets the IPendingWork to allow the external code, raising the event, to participate in the batch.
Public propertyWorkItemGets or sets the object that contains the external code that raises the event.
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  NameDescription
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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NoteNote

This material discusses types and namespaces that are obsolete. For more information, see Deprecated Types in Windows Workflow Foundation 4.5.

A local communication interface marked with ExternalDataExchangeAttribute must declare a type that derives from ExternalDataEventArgs in the interface definition for the corresponding event to be handled in a workflow with a HandleExternalEventActivity activity.

An event class that inherits from ExternalDataEventArgs must implement a constructor that uses the :base(instanceId) constructor. In addition, the new event class must be marked as Serializable as shown in the following code.

[Serializable]
public class TaskEventArgs : ExternalDataEventArgs
{
    private string orderName;

    public TaskEventArgs(Guid instanceId, string id)
        :base(instanceId)
    {
        orderName = id;
    }

    public string Id
    {
        get { return orderName; }
        set { orderName = value; }
    }
}

.NET Framework

Supported in: 4, 3.5, 3.0
Obsolete (compiler warning) in 4.6
Obsolete (compiler warning) in 4.6
Obsolete (compiler warning) in 4.5
Obsolete (compiler warning) in 4.5.1
Obsolete (compiler warning) in 4.5.2

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