gistfile1.txt

var recognizerLeft = new UISwipeGestureRecognizer (this, new Selector ("swipeLeft"));
			recognizerLeft.Direction = UISwipeGestureRecognizerDirection.Left;
			AddGestureRecognizer (recognizerLeft);	

[Export("swipeLeft")]
		public void swipeLeft (UISwipeGestureRecognizer sender)
		{
			...
		}