Dishwasher fills but does not wash. Dishwasher will drain if program cancelled.

Do you hear a humming sound, like the motor trying to run, then stopping for a minute or two before trying again?

Usually, dishwashers run the motor one direction to wash, and the opposite direction to drain, but some use a valve to switch. If you see wires going to a bulky flapper looking part sticking off the side of the pump/motor, you might have a bad valve actuator.

Otherwise, you might have a motor refusing to turn in one direction. You can usually access the shaft from inside the tub by removing the washer arm to get access to the pump impeller. Do not remove the impeller unless necessary, but see if it will turn both directions. Broken glass or pieces of bones or other debris might be interfering with the rotation. If it turns freely both ways, but still won't wash, it is likely you have a bad starter coil on the motor, and will need to replace the motor/pump assembly. These usually have a longer warranty than the rest of the unit, so if yours is less than 5 years old or so, it would be worth checking with factory service.