For the way of the sub.

SwipeTap.cs

public class ButtonEx : Button
{
    public ButtonEx() : base()
    {
        ManipulationMode = ManipulationModes.TranslateX | ManipulationModes.System;
        ManipulationCompleted += (s, e) => ShouldExcuteCommand2(Math.Abs(e.Cumulative.Translation.X));
        Tapped += (s, e) => ShouldExcuteCommand2(DateTime.Now);
    }

    private void ShouldExcuteCommand2(double distanceX)
    {
        if (distanceX > 16) ShouldExcuteCommand2(DateTime.Now);
    }

    private void ShouldExcuteCommand2(DateTime time)
    {
        var delta = DateDiff(lastExecute, time);
        if (delta > TimeSpan.FromMilliseconds(500)) ExecuteCommand2();
    }

    private TimeSpan DateDiff(DateTime early, DateTime late) => late.Subtract(early);

    DateTime lastExecute = DateTime.MinValue;
    private void ExecuteCommand2()
    {
        lastExecute = DateTime.Now;
        Command2?.Execute(CommandParameter);
    }

    public ICommand Command2
    {
        get { return (ICommand)GetValue(Command2Property); }
        set { SetValue(Command2Property, value); }
    }
    public static readonly DependencyProperty Command2Property =
        DependencyProperty.Register(nameof(Command2), typeof(ICommand),
            typeof(ButtonEx), new PropertyMetadata(null));
}