Beloved people you would not put your fine jewelry or timepieces in the dishwasher. Why would you put your good knives in there? NEVER EVER put your nice knives in anything put hot water and soap. Never wash knives with anything other than hot water, soap and your own hands. Yer gonna cut half an onion and 2 ribs of celery to go with the 12oz of boneles chicken breast you butterflied earlier, and the entire process meant about 8 total minutes of knife work. That hardly qualifies for the dishwashing cycle!!!
Your best knife is used and then immediately cleaned and hung. No valid reason for it to be any other way.