Having problems with dynamically added conrols and events

I've added dynamically a button to my webpage and link the event OnClick
Buttons[i] = new Button();
Buttons[i].Click += new EventHandler(ButtonClick);
But then running the page and pressing the button i got nothing.
Using debugger i toggled breakpont to check, and i don't know why, but actually no events raised after pressing the button.
What's wrong?

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