// Callback method must have the same signature as the
// AsyncCallback delegate.
public IQueueItem EndReceive(IAsyncResult asyncResult)
{
// Retrieve the delegate.
ReceiveMessageCallback caller = (ReceiveMessageCallback)asyncResult.AsyncState;
// Call EndInvoke to retrieve the results.
IQueueItem item = (IQueueItem)caller.EndInvoke(asyncResult);
AsyncCompleted(item);
this.ResetEvent.WaitOne();
return(item);
}
public IQueueItem AsyncReceive(object state)
{
if (state == null)
{
state = new object();
}
TimeSpan timeout = TimeSpan.FromMilliseconds(QueueApi.LongTimeout);
ReceiveMessageCallback caller = new ReceiveMessageCallback(this.ReceiveItemWorker);
// Initiate the asychronous call.
IAsyncResult result = caller.BeginInvoke(timeout, state, CreateCallBack(), caller);
result.AsyncWaitHandle.WaitOne();
// Call EndInvoke to wait for the asynchronous call to complete,
// and to retrieve the results.
IQueueItem item = caller.EndInvoke(result);
AsyncCompleted(item);
return(item);
}