private void Timer_Tick(object sender, EventArgs e)
        {
            if (TrackPositions.Any() && Player.CurrentPosition < TrackPositions.Count)
            {
                if (!MainMap.Children.Contains(_pinCar))
                {
                    MainMap.Children.Add(_pinCar);
                }

                var point = TrackPositions[Player.CurrentPosition];

                _pinCar.Location = new Location(point.Latitude, point.Longitude);
                TrackPositionsDataGrid.SelectRowByIndex(Player.CurrentPosition);
                Player.CurrentPosition++;

                if (NewImitationTrackGpsDevicesDataGrid.Items.Count > 0 &&
                    NewImitationTrackGpsDevicesDataGrid.SelectedIndex != -1)
                {
                    var device   = (GpsDevice)NewImitationTrackGpsDevicesDataGrid.SelectedItem;
                    var devIndex = NewGpsDevices.IndexOf(device);
                    NewGpsDevices[devIndex].CurrentTrackPosition = Player.CurrentPosition;
                }
            }
            else
            {
                Player.Timer.Stop();
                Player.CurrentPlayPauseState = false;
            }
        }
 private void PlayerSlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
 {
     if (TrackPositions.Count > 0)
     {
         TrackPositionsDataGrid.SelectRowByIndex((int)Player.PlayerSlider.Value);
     }
 }