How to get toddler to eat

This isn't a pregnancy question but I am struggling with getting my two year old to eat. He never eats dinner and sometimes lunch. I refuse to give in and make him more food or give him crap. Today we were supposed to go to a visit his grandparents but he refused to eat and threw a tantrum so we didn't go. He doesn't get to go play and get goodies after not eating what I give him.  Anyone have any suggestions? I am really frustrated and my hormones are getting the best of me