LocalOwnerPresence.BeginAcknowledgeSubscriber Method
Begins an asynchronous operation to acknowledge a subscriber.
Namespace: Microsoft.Rtc.Collaboration.Presence
Assembly: Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)
Syntax
'Declaration
Public Function BeginAcknowledgeSubscriber ( _
subscriberId As String, _
userCallback As AsyncCallback, _
state As Object _
) As IAsyncResult
'Usage
Dim instance As LocalOwnerPresence
Dim subscriberId As String
Dim userCallback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult
returnValue = instance.BeginAcknowledgeSubscriber(subscriberId, _
userCallback, state)
public IAsyncResult BeginAcknowledgeSubscriber(
string subscriberId,
AsyncCallback userCallback,
Object state
)
Parameters
- subscriberId
Type: System.String
The subscriber to acknowledge.
- userCallback
Type: System.AsyncCallback
The method to be called when the asynchronous operation is completed.
- state
Type: System.Object
A user-provided object that distinguishes this particular asynchronous operation from other asynchronous operations.
Return Value
Type: System.IAsyncResult
An IAsyncResult that references the asynchronous operation.
Exceptions
| Exception | Condition |
|---|---|
| InvalidOperationException | Thrown when the endpoint is not in the "registered" state. |
| ArgumentException | Thrown when subscriberId is empty. |
| ArgumentNullException | Thrown when subscriberId is null. |