Begins an asynchronous operation to acknowledge a subscriber.

Namespace:  Microsoft.Rtc.Collaboration.Presence
Assembly:  Microsoft.Rtc.Collaboration(in Microsoft.Rtc.Collaboration.dll)

Syntax

Visual Basic (Declaration) 
Public 
Function 
BeginAcknowledgeSubscriber ( _
	
subscriberId 
As 
String, _
	
userCallback 
As 
AsyncCallback, _
	
state 
As 
Object _
) 
As 
IAsyncResult
C# 
public 
IAsyncResult 
BeginAcknowledgeSubscriber(
	
string 
subscriberId,
	
AsyncCallback 
userCallback,
	
Object 
state
)
Visual C++ 
public:
IAsyncResult^ 
BeginAcknowledgeSubscriber(
	
String^ 
subscriberId, 
	
AsyncCallback^ 
userCallback, 
	
Object^ 
state
)
JavaScript 
function 
beginAcknowledgeSubscriber(
subscriberId, 
userCallback, 
state);

Parameters

subscriberId
Type: String
The SubscriberId to acknowledge.
userCallback
Type: AsyncCallback
The method to be called when the asynchronous operation is completed.
state
Type: Object
A user-provided object that distinguishes this particular asynchronous operation from other asynchronous operations.

Return Value

An IAsyncResult that references the asynchronous operation.

Exceptions

Exception Condition
InvalidOperationException Thrown when the endpoint is not in the "registered" state.
ArgumentException Thrown when subscriberIdis empty.
ArgumentNullException Thrown when subscriberIdis null.

See Also