public async void mn_TipClick(object sender, RoutedEventArgs e)
{
Tip objectTip = new Tip();
var content = await objectTip.ShowAsync();
if (content == ContentDialogResult.Primary)
{
Settings.tip = objectTip.tip;
}
this.splv_Register.IsPaneOpen = !this.splv_Register.IsPaneOpen;
}