private void SNSetUp_Click(object sender, RoutedEventArgs e)
        {
            UserControl nUserControl = new SetUpSocialNetworkUI();

            SetOpenFrame(nUserControl);
            ContentFrame.Navigate(nUserControl);
        }
        private UserControl openedFrame;                         //< Reference to opened user control

        public SocialManagerMain()
        {
            InitializeComponent();

            // Set images
            logoImage.Source        = PathUtilities.GetImageSource("Logo.png");
            LogoutImage.Source      = PathUtilities.GetImageSource("Logout.png");
            EditProfileImage.Source = PathUtilities.GetImageSource("EditProfile.png");
            MainWindow.Title        = "Social Manager - " + ClientController.client.Profile.Username;

            // References to instanciated chats
            instantiatedChats = new Dictionary <string, Expander>();

            // Set timer to check which contacts are online
            checkFriends = new System.Timers.Timer()
            {
                Enabled  = true,
                Interval = 3000 // Check every 3 seconds
            };
            checkFriends.Elapsed += (s, e) => CheckFriends();

            UserControl nUserControl = new SetUpSocialNetworkUI();

            SetOpenFrame(nUserControl);
            ContentFrame.Navigate(nUserControl);
        }