Question : behind a click

when a button is clicked, how can we find out what are the
*web services
*methods
*events etc
that are called or involved?

do we need to breakpoints and step in to find out? any other options?

thanks

Answer : behind a click

Usually it will either have an OnButtonClick="someMethod" in the asp.net page (for web) or form (for application), or in the code behind you will have something like this
this.btnMyButton.Click += new System.EventHandler(someMethod);

And you can look at the method to see what it is doing.

Or, are you looking for something different? Such as reflection to see what is on the button?