Get some golfcore chinos, then put brass knuckles in the backpocket and sandpaper it so it makes a fade in the shape of the brass knuckles. Everyone on the course will be afraid of you. Thus, you will win!
I'm not really sure what industry you are talking about, and whether or not you are joking, but if it is warm I would just wear regular khaki shorts with the 9 inch pleats and a tucked in polo shirt (the brand doesn't really matter). I personally like Nike shoes the best, but of course that is up to you.
If it is a bit cooler, go for khakis instead of the shorts. If you want some ideas just google Tiger and check out some of his outfits. He usually looks pretty good on the course with color coordination and what have you.
Actually, if I may, this is one time (country club, business situation) where you probabably actually don't want to stand out fashion-wise. Being a golfer myself I would suggest not to wear anything flashy or J-Lindeberg-ish unless you are slim and under age 30. Otherwise you are best to blend in with the crowd. I suggest more traditional golf brands worn by the majority of PGA pros -- Ashworth, Cutter and Buck, Polo, or even Lacoste.