CommandActivity.IEventActivity.Subscribe Method
Called to get the CommandActivity to create a queue for its event. Because commands do not exist standalone without CommandsActivity in Microsoft Unified Communications Managed API, this method is only called by the CommandsActivity.
Namespace: Microsoft.Rtc.Workflow.Activities
Assembly: Microsoft.Rtc.Workflow (in Microsoft.Rtc.Workflow.dll)
Syntax
'Declaration
Private Sub Subscribe ( _
parentContext As ActivityExecutionContext, _
parentEventHandler As IActivityEventListener(Of QueueEventArgs) _
) Implements IEventActivity.Subscribe
'Usage
Dim instance As CommandActivity
Dim parentContext As ActivityExecutionContext
Dim parentEventHandler As IActivityEventListener(Of QueueEventArgs)
CType(instance, IEventActivity).Subscribe(parentContext, _
parentEventHandler)
void IEventActivity.Subscribe(
ActivityExecutionContext parentContext,
IActivityEventListener<QueueEventArgs> parentEventHandler
)
Parameters
- parentContext
Type: System.Workflow.ComponentModel.ActivityExecutionContext
- parentEventHandler
Type: System.Workflow.ComponentModel.IActivityEventListener<QueueEventArgs>
Implements
IEventActivity.Subscribe(ActivityExecutionContext, IActivityEventListener<QueueEventArgs>)
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | Thrown if argument is null. |