As mentioned above all views support the Click event. All that needs to be done in order to handle the click event of a button named Button1 is to add a sub named Button1_Click (the sub name should actually match the EventName property which is by default the same as the name).
For example if you want to show the main Activity when the user presses on Button1 you can use this code:
Code:
Sub Button1_Click
StartActivity(Main)
End Sub