protected override IEnumerator <IAsyncResult> GetQueuePropertiesImpl(IAccountIdentifier identity, string account, string queue, bool getMessageCount, SASAuthorizationParameters sasParams, TimeSpan?timeout, RequestContext requestContext, AsyncIteratorContext <QueueProperties> context)
{
RemainingTime remainingTime = new RemainingTime(timeout);
IAsyncResult asyncResult = this.BeginGetQueue(identity, account, queue, PermissionLevel.Read, sasParams, ContainerPropertyNames.ApplicationMetadata, remainingTime, requestContext, context.GetResumeCallback(), context.GetResumeState("QueueManager.GetQueuePropertiesImpl"));
yield return(asyncResult);
IQueueContainer operationStatus = this.EndGetQueue(asyncResult);
if (requestContext != null)
{
operationStatus.OperationStatus = requestContext.OperationStatus;
}
NameValueCollection nameValueCollection = QueueHelpers.DeserializeMetadata(operationStatus.ApplicationMetadata);
long?nullable = null;
if (getMessageCount)
{
operationStatus.Timeout = remainingTime;
asyncResult = operationStatus.BeginGetQueueStatistics(true, true, context.GetResumeCallback(), context.GetResumeState("QueueManager.GetQueuePropertiesImpl"));
yield return(asyncResult);
nullable = new long?(operationStatus.EndGetQueueStatistics(asyncResult).TotalMessages);
}
context.ResultData = new QueueProperties(account, queue, nullable, nameValueCollection);
}