public static bool IsCheckMessage(this QueuedNotification queuedNotification, string identifier)
{
if (!string.IsNullOrEmpty(identifier))
{
return(queuedNotification.ListOfObserverIdentifier.Any(e => e == identifier));
}
throw new ArgumentNullException(identifier);
}
public static void AddObserver(this QueuedNotification queuedNotification, string identifier)
{
if (!string.IsNullOrEmpty(identifier))
{
if (!queuedNotification.ListOfObserverIdentifier.Any(e => e == identifier))
{
List <string> identifiers = queuedNotification.ListOfObserverIdentifier.ToList();
identifiers.Add(identifier);
queuedNotification.ObserverIdentifier = string.Join(",", identifiers);
}
}
}