Jun 19, 2019 11:08 AM|PatriceSc|LINK
My guess is that you still have a full postback which prevent the Ajax success callback to run as expected. What if your return false from your click handler ?
Generally speaking I often suggest to not read code to find out what happens. Instead use debugging tools (for example F12 Network in your browser) to see what really happens when your code runs and then look at your code see why it happens.