how do i add a menu to a button

Specifically, I have a button called 'utilityButton'. When I right-click this I want it to display a drop-down menu with 2 items: test1 & test2.

 

I've defined a ContextMenu called utilityMenu with these two options and attached it to the utilityButton:

 

utilityButton.ContextMenu = utilityMenu.

 

This doesn't acttually seem to be implemented according to the Buttons Class documentation for Windows Forms. 

 

So I can't get it to appear. I right- and left-click the button and nothing happens.

 

Any help appreciated.

 

Thanks!

 

Ken