public ChatActivityTab()
        {
            InitializeComponent();
            try
            {
                var device   = Resolver.Resolve <IDevice>();
                var oNetwork = device.Network;
                var xx       = oNetwork.InternetConnectionStatus() == NetworkStatus.NotReachable;

                var ResultData = SQL_Commander.GetChatUsersCacheList();

                if (xx == true)
                {
                    if (ResultData.Count > 0)
                    {
                        ChatActivityListview.ItemsSource = ResultData;
                    }
                    else
                    {
                        Device.BeginInvokeOnMainThread(() =>
                        {
                            if (ChatActivityListview.IsVisible == true)
                            {
                                ChatActivityListview.IsVisible = false;
                                EmptyChatPage.IsVisible        = true;
                            }
                        });
                    }
                }
                else
                {
                    if (ResultData.Count > 0)
                    {
                        ChatActivityListview.ItemsSource = ResultData;
                    }
                    else
                    {
                        Device.BeginInvokeOnMainThread(() =>
                        {
                            if (ChatActivityListview.IsVisible == true)
                            {
                                ChatActivityListview.IsVisible = false;
                                EmptyChatPage.IsVisible        = true;
                            }
                        });
                    }
                }

                UpdateChatActivityFunctionTask().ConfigureAwait(false);
            }
            catch (Exception)
            {
            }
        }