/// <summary>
/// This method Unsubscribe
/// </summary>
public void Unsubscribe(Guid id)
{
// if the value for HasSubscribers is true
if ((HasSubscribers) && (Subscribers.Count > 0))
{
// attempt to find this callback
SubscriberCallback callback = Subscribers.FirstOrDefault(x => x.Id == id);
// If the callback object exists
if (NullHelper.Exists(callback))
{
// Remove this item
Subscribers.Remove(callback);
// create a new message
SubscriberMessage message = new SubscriberMessage();
// set the message return properties
message.FromId = ServerId;
message.FromName = "Subscriber Service";
message.Text = callback.Name + " has left the conversation.";
message.ToId = Guid.Empty;
message.ToName = "Room";
message.IsSystemMessage = true;
// Broadcast the message to everyone
BroadcastMessage(message);
}
}
}
public void RemoveFromSubscribers(Guid subscribeId)
{
var subscription = Subscribers.FirstOrDefault(s => s.SubscriberId == subscribeId);
if (subscription == null)
{
throw new Exception("This user is not subscribe to you");
}
Subscribers.Remove(subscription);
}
/// <summary>
/// This method returns the Subscriber
/// </summary>
public SubscriberCallback FindSubscriber(Guid id)
{
// initial value
SubscriberCallback subscriber = null;
// if the id Guid is set and the Subscribers exist
if ((id != Guid.Empty) && (HasSubscribers))
{
// Set the return value
subscriber = Subscribers.FirstOrDefault(x => x.Id == id);
}
// return value
return(subscriber);
}
public SampleSubscribersViewModel()
{
Subscribers = _sampleSubscribers;
SelectedSubscriber = Subscribers.FirstOrDefault();
}