There really are no clear cut diet guidelines and I'm sure you'll get many different answers. For me, really anything with a decent amount of carbs will give me a bad reaction. Currently, I am on a very low carb diet, I am eating no grains of any type, no beans, no fruit, etc. The only things I really eat that have any carbs are dairy products (this is very personal as to if you will do well with milk, yogurt, etc.), almonds, and pumpkin seeds (which in themselves have anti-fungal properties. Other than that my diet consists of raw and cooked veggies, coconut milk, brown rice protein, hemp milk, eggs (in moderation) and plenty of raw milk, raw milk cheese, yogurt, kefir, and cottage cheese.
I will not be maintaining this diet long-term, as I feel it could eventually be detrimental, but short term I think its a good way to let the immune system take out the candida and repopulate the system with good bacteria. For me, the dairy products have actually been very good. I used to be lactose intolerant when I had candida real bad. Now that I have it somewhat under control I do very well with dairy and I feel that it has a positive effect on my health. If you can't tolerate dairy and you eat it anyway, it will not be good for your health because it will not be digested properly.
After I am off of this ultra-strict diet, I will probably add some grains back in. Brown rice, mung beans, green split peas, and lentils are my favorites. I would say steel cut oats are okay, but again it depends on the individual. Fruit is a tough one. The body does really need the good healthy sugars from fresh fruit but the candida really does thrive on these. I would really try getting the candida under control before adding these back into your diet. If you feel you are okay with fruit, eat it in small amounts and not mixed with anything else, especially not mixed with dairy or protein. Also, if you do eat dairy, try to eat it by itself as well.
Hope this helped, but again this is just what has worked for me.