Class CompositeEventBase<T>

Compostite base class for all event related activities. The composite base class is responsible for event registration/unregistration to hosts EventTrackingService.

Implements
System.Workflow.Activities.IEventActivity
Namespace: EPiServer.WorkflowFoundation.Activities
Assembly: EPiServer.WorkflowFoundation.dll
Version: 8.11.0
Syntax
public abstract class CompositeEventBase<T> : SequenceActivity, IEventActivity where T : HandleExternalEventActivity, new()
Type Parameters
Name Description
T

the "raw" event activity

Constructors

CompositeEventBase()

Initializes a new instance of the CompositeEventBase<T> class.

Declaration
protected CompositeEventBase()

Properties

Description

Gets or sets the user defined description of the System.Workflow.ComponentModel.Activity.

Declaration
public string Description { get; set; }
Property Value
Type Description
System.String

EventActivity

Gets wrapped "raw" event activity.

Declaration
protected T EventActivity { get; }
Property Value
Type Description
T

The event activity.

QueueName

Gets the name of the System.Workflow.Runtime.WorkflowQueue on which the activity is waiting for data to arrive.

Declaration
public IComparable QueueName { get; }
Property Value
Type Description
System.IComparable

Methods

OnEventRegistered(Guid, String)

Raises the EventRegistered event.

Declaration
protected void OnEventRegistered(Guid instanceId, string eventName)
Parameters
Type Name Description
System.Guid instanceId

The instance id.

System.String eventName

Name of the event.

RegisterEvent(Object, EventArgs)

Register event with EventTrackingService so host knows that this instance waits for event

Declaration
protected virtual void RegisterEvent(object sender, EventArgs e)
Parameters
Type Name Description
System.Object sender

The sender.

System.EventArgs e

The System.EventArgs instance containing the event data.

Subscribe(ActivityExecutionContext, IActivityEventListener<QueueEventArgs>)

Creates the subscription of an Microsoft.Workflow.ComponentModel.Activity to an event.

Declaration
public void Subscribe(ActivityExecutionContext parentContext, IActivityEventListener<QueueEventArgs> parentEventHandler)
Parameters
Type Name Description
System.Workflow.ComponentModel.ActivityExecutionContext parentContext

The System.Workflow.ComponentModel.ActivityExecutionContext that represents the execution environment of the System.Workflow.ComponentModel.Activity.

System.Workflow.ComponentModel.IActivityEventListener<System.Workflow.ComponentModel.QueueEventArgs> parentEventHandler

The System.EventHandler for the parent event.

UnregisterEvent(Object, EventArgs)

Unregister event with EventTrackingService

Declaration
protected virtual void UnregisterEvent(object sender, EventArgs e)
Parameters
Type Name Description
System.Object sender

The sender.

System.EventArgs e

The System.EventArgs instance containing the event data.

Unsubscribe(ActivityExecutionContext, IActivityEventListener<QueueEventArgs>)

Cancels the subscription of an Microsoft.Workflow.ComponentModel.Activity to an event.

Declaration
public void Unsubscribe(ActivityExecutionContext parentContext, IActivityEventListener<QueueEventArgs> parentEventHandler)
Parameters
Type Name Description
System.Workflow.ComponentModel.ActivityExecutionContext parentContext

The System.Workflow.ComponentModel.ActivityExecutionContext that represents the execution environment of the System.Workflow.ComponentModel.Activity.

System.Workflow.ComponentModel.IActivityEventListener<System.Workflow.ComponentModel.QueueEventArgs> parentEventHandler

The System.EventHandler for the parent event.

Events

EventRegistered

Occurs when an event is registered.

Declaration
public event EventHandler<EventRegisterEventArgs> EventRegistered
Event Type
Type Description
System.EventHandler<EventRegisterEventArgs>

Implements

System.Workflow.Activities.IEventActivity