IEndpoint.BeginUnsubscribePresence Method
Begins an asynchronous request to remove a subscription for a contact that is not in the user's default contact list.
Namespace: Microsoft.Exchange.InstantMessaging
Assembly: Microsoft.Exchange.InstantMessaging (in Microsoft.Exchange.InstantMessaging.dll)
Syntax
'Declaration
Function BeginUnsubscribePresence ( _
uri As String, _
userCallback As AsyncCallback, _
state As Object _
) As IAsyncResult
'Usage
Dim instance As IEndpoint
Dim uri As String
Dim userCallback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult
returnValue = instance.BeginUnsubscribePresence(uri, _
userCallback, state)
IAsyncResult BeginUnsubscribePresence(
string uri,
AsyncCallback userCallback,
Object state
)
Parameters
- uri
Type: System.String
The Session Initiation Protocol (SIP) URI of the contact to remove the subscription for.
- userCallback
Type: System.AsyncCallback
The System.AsyncCallback delegate that is called when the operation is complete. The callback handler is responsible for calling the EndUnsubscribePresence(IAsyncResult) method.
- state
Type: System.Object
Contains user state information for the requested operation.
Return Value
Type: System.IAsyncResult
An System.IAsyncResult object that references the asynchronous request.
See Also