public int JoinTheParty(string guestName)
{
// Subscribe the guest to the beer inventory
IBeerInventoryCallback guest = OperationContext.Current.GetCallbackChannel <IBeerInventoryCallback>();
if (!_callbackList.Contains(guest))
{
_callbackList.Add(guest);
}
_callbackList.ForEach(delegate(IBeerInventoryCallback callback)
{ callback.NotifyGuestJoinedParty(guestName); });
return(_beerInventory);
}
public void LeaveTheParty(string guestName)
{
// Unsubscribe the guest from the beer inventory
IBeerInventoryCallback guest = OperationContext.Current.GetCallbackChannel <IBeerInventoryCallback>();
if (_callbackList.Contains(guest))
{
_callbackList.Remove(guest);
}
// Notify everyone that guest has arrived.
// Use an anonymous delegate and generics to do our dirty work.
_callbackList.ForEach(delegate(IBeerInventoryCallback callback)
{
callback.NotifyGuestLeftParty(guestName);
});
}
