I am new to DNN, and have inherited an old site.

I have managed to upgrade this in a test server to 9.1.1 from 7.2, and I need to add some new functionality to some pages, one of which is to add the username and updated date to a database table via html.

Does anyone have a code snippet they could share in order to help with this, I have tried various code's but theu either fail with an error or do not work, I am trying to add the details into text boxes first for verification.