I had a frozen pipe under my kitchen sink and was able to get the hot water moving with a hair dryer but the dishwasher also has a frozen pipe. I was able to warm that up and get that going, but when I ran my washer, it filled up with water and spilled out all over the place. I shut off the water and got everything cleaned up and the water stopped running. after all of that, I turned the water back on and it was pouring out into my basement. did the freezing ruin something?
Could a frozen dishwasher line have ruined something?
Are you kidding? Water spilling out and even in your basement and you're asking if something 'could have been ruined'? You're way past that point.
Freezing water breaks things. It probably destroyed the pump in your dish washer and any fittings near by.
PROTIP: Don't let the next one freeze.