private void TabContainer_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            switch ((string)((TabItem)TabContainer.SelectedItem).Header)
            {
            case "Champions":
                Champions champions = ChampionsContainer.Content as Champions;
                champions.Update();
                break;

            case "Skins":
                Skins skins = SkinsContainer.Content as Skins;
                skins.Update();
                break;

            default:
                break;
            }
        }