private void Button_Click_2(object sender, RoutedEventArgs e) //Join lobby
{
GiveSpelerAndLobbyID(sender, out tellerLobbyID, out tellerSpelerID); //Spreekt voor zich...
ServiceReference1.Service1Client client = new ServiceReference1.Service1Client();
client.JoinLobbyCompleted += client_JoinLobbyCompleted; //Join lobby
client.JoinLobbyAsync(tellerLobbyID, tellerSpelerID);
}