app.cs

using Xamarin.Forms;

namespace DraggableView
{
	public class App
	{
		public static Page GetMainPage()
		{
			return new ContentPage
			{
				Content = new Label
				{
					Text = "Hello, Forms !",
					VerticalOptions = LayoutOptions.CenterAndExpand,
					HorizontalOptions = LayoutOptions.CenterAndExpand,
				},
			};
		}
	}
}

tapgesture-usage.cs

var tapGestureRecognizer = new TapGestureRecognizer();

tapGestureRecognizer.Tapped += (s, e) => {
    // handle the tap here
};

control.GestureRecognizers.Add(tapGestureRecognizer);