So very confused.
Simple carbs are more likely to be a problem than complex carbs.
Avoid foods high in sugar, especially foods high in sucrose or table sugar. Things like milk and fruit have natural sugars, but are less likely to cause dumping than things like candy or cookies.
Avoid or limit "starchy" foods like white bread, white rice, white pasta, potato chips or pretzels. Complex carbs like whole grain bread, whole grain pasta, or brown rice are less likely to cause problems.
Please note: I AM NOT A DOCTOR. If you want medical advice, talk to your doctor. Whatever I post, there is probably some surgeon or other health care provider somewhere that disagrees with me. If you want to know what your surgeon thinks, then ask him or her. Check out my blog.