Async Begin..End example

begin..endExample

private void MyMethod() {

//do some stuff
var flow = GetFlowFromSomewhere();
var message = GetMessageFromSomewhere();

flow.BeginSendInstantMessage(message, EndBeginSendInstanceMessage, flow);

//do some other things....
}

private static void EndBeginSendInstantMessage(IAsyncResult ar)
        {
            try
            {
              InstantMessagingFlow flow = (InstantMessagingFlow)ar.AsyncState;
              flow.EndSendInstantMessage(ar);
            }
            catch (Exception ex)
            {
              //do something with this error
            }
        }