private async void Cancel_ClickedAsync(object sender, EventArgs e) //Mostra il form di registrazione
{
await RegisterStack.FadeTo(0, 500);
await RegisterStack.TranslateTo(0, 1000, 1);
await LoginStack.TranslateTo(0, 0, 1);
await LoginStack.FadeTo(1, 500);
}
private async void LoginFade()
{
await RegisterStack.FadeTo(0, 1);
await RegisterStack.TranslateTo(0, 1000, 1);
}