How to detect which button was clicked in code behind?

Question

I have three buttons each calling btn_Clicked on their onClick event. In code behind I want to get the ID of the button that caused postback. I kno

Answer 1

Check whether the sender argument of your callback method is the same reference as the button your are interested in.

Button button1;
Button button2;

void OnClick(object sender, RoutedEventArgs args)
{
    Button button = sender as Button;
    if (button == button1)
    {
        ...
    }
    if (button == button2)
    {
        ...
    }
}