private void OnError(Exception exception)
{
Debug.Print(exception.Message);
Readers.ClearOnScheduler();
EventHistory.ClearOnScheduler();
}
private void UpdateReaderList(IEnumerable <string> readerNames)
{
Readers.ClearOnScheduler();
EventHistory.ClearOnScheduler();
Readers.AddRangeOnScheduler(readerNames);
}