Hi Bonnie, please let me know if you would prefer I start another thread for my question, I'm thinking of changing the way I achieve refreshing a calling form, at the moment I'm using delegates and events in all forms that my *main* form calls - all works fine, but, you've whetted my interest using interfaces. The scenario I have in one of my apps is: I have a master form with a TabControl, the TabControl loads TabPages programatically - which in turn load predefined usercontrols - phew ! . Can you think of a way to make my usercontrols *aware of a method* in my master form ( I hope this makes sense ? ) using a similar method you gave for this thread ?