passing click button event to different c# file -

passing click button event to different c# file -

i've added new cs file project (some function), , want start running when click button on main form. these 2 different files. used same namespace in both of these files, how pass click button event new cs file?

thx.

declare method in sec class static , phone call event.

void clickevent (...) { secondclass.staticdesiredmethod(...); }

instantiate sec class , phone call method.

void clickevent (...) { var secondclass = new secondclass(); secondclass.desiredmethod(); }

c#