RemotePresenceView.StartSubscribingToPresentities Method
Start the operation to subscribe to the specified list of targets.
Namespace: Microsoft.Rtc.Collaboration.Presence
Assembly: Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)
Syntax
'Declaration
Public Sub StartSubscribingToPresentities ( _
targets As IEnumerable(Of RemotePresentitySubscriptionTarget) _
)
'Usage
Dim instance As RemotePresenceView
Dim targets As IEnumerable(Of RemotePresentitySubscriptionTarget)
instance.StartSubscribingToPresentities(targets)
public void StartSubscribingToPresentities(
IEnumerable<RemotePresentitySubscriptionTarget> targets
)
Parameters
- targets
Type: System.Collections.Generic.IEnumerable<RemotePresentitySubscriptionTarget>
Targets being subscribed to in this view.
Exceptions
| Exception | Condition |
|---|---|
| InvalidOperationException | Thrown when the underlying endpoint is not established or when the view is no longer active. |
| ArgumentNullException | Thrown targets is null or contains a null member. |
| ArgumentException | Thrown when targets is an empty collection. |
Remarks
Use the SubscriptionStateChanged event to track whether a subscription is sucessful. Presence events can be obtained by wiring the PresenceNotificationReceived event handlers.