Attach new script to button onclick event in unity3d c#

Question

I am creating a new gameobject from c# and trying to execute a script when clecked. here is the code.

    public void createButton(){
            GameObject kGO = new GameObject ();
            kGO.transform.parent = kCanvas.transform;
            kGO.AddComponent<Image>();
            Button btn = kGO.AddComponent<Button>();
            btn.onClick.AddListener(onButtonClick);
    }

    public void onButtonClick(){
        Debug.Log ("clicked");
    }

but this script is not working, there is not any script attached to the button. .

I have tried these also

btn.onClick.AddListener(() => {onButtonClick()});
or
btn.onClick.AddListener(() => {onButtonClick();});
or
btn.onClick.AddListener(() => onButtonClick());

But nothing is working.

Answer 1

I have updated unity to 5.1.2, now it is working fine. But it still do not reflect in the UI, some people are saying that non persistent unity events does not reflect in the UI, I guess that is true.