Can not make swipe gesture work

I've tried to make swipe gesture for user swipe to left and right.

Fortunately, I found a useful example in Professional iPhone Programming with MonoTouch and .NET/C# chapter page 292 Recognizing Gestures and this article. However, when I run this code in simulator, nothing happens. What did is I miss?

Please could you help me to make this work?

The code that I used can be downloaded by the following link. http://www.7749tutor.com/code/iPad06.zip Please, have a look at line 31 of MyViewController.cs file

Looking forward to hearin开发者_C百科g from you.

I made this much easier class extension method to a UIView instance: View Extension

You use it like:

View.Swipe(UISwipeGestureRecognizerDirection.Right).Event += (s, r) =>
    new UIAlertView("Swipe Test", "Swipe " + r.Direction.ToString(), null, "Ok")
        .Show();

No longer do you have to add ugly code to your projects for swipes!

This is how I do it in one of my views:

(inside my class definition)

public static Selector RightSwipeSelector
{
    get
    {
        return new Selector("HandleRightSwipe");
    }
}

public class SwipeRecogniserDelegate : UIGestureRecognizerDelegate
{
    public override bool ShouldReceiveTouch (UIGestureRecognizer recognizer, UITouch touch)
    {
        return true;
    }
}

[Export("HandleRightSwipe")]
public void HandleRightSwipe(UISwipeGestureRecognizer recogniser)
{
    Debug.WriteLine("Got a right swipe.");
}

(inside ViewDidLoad)

    UISwipeGestureRecognizer sgrRight=new UISwipeGestureRecognizer();

    sgrRight.AddTarget(this,RightSwipeSelector);

    sgrRight.Direction=UISwipeGestureRecognizerDirection.Right;

    sgrRight.Delegate=new SwipeRecogniserDelegate();

    View.AddGestureRecognizer(sgrRight);