VB - Quickly determine which option button is selected

[Ed Lampman]

Often OptionButton controls are arranged in
control arrays. To quickly find the index of
the only selected OptionButton control you
can use the following code:

' assumes that the control array contains 
three OptionButton controls
intSelected = Option(0).Value * 0 - Option(1).Value * 1 - Option(2).Value * 2

Note that the first operand is always zero,
and you can simplify the above expression as follows:
intSelected = -Option(1).Value - Option(2).Value * 2