SipSubscription.BeginRefresh(AsyncCallback, Object) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Creates a transaction async result to refresh an existing subscription and puts the workitem in queue. Refresh is allowed only if the current subscription state is valid. Multiple simultaneous refreshes are allowed, but not recommended for the application.
public:
IAsyncResult ^ BeginRefresh(AsyncCallback ^ userCallback, System::Object ^ state);public IAsyncResult BeginRefresh (AsyncCallback userCallback, object state);member this.BeginRefresh : AsyncCallback * obj -> IAsyncResultPublic Function BeginRefresh (userCallback As AsyncCallback, state As Object) As IAsyncResultParameters
- userCallback
- AsyncCallback
The method to be called when the asynchronous operation is completed.
- state
- Object
A user-provided object that distinguishes this particular asynchronous operation from other asynchronous operations.
Returns
An IAsyncResult that references the asynchronous operation.
Exceptions
Thrown when the current subscription signaling state is not Subscribed.