Trying to get the selected tab in a code behind

Trying to get the selected tab in a code behind


Hi Guys,
I am using the UI for a form I am working on in an aspx page. I
need to get which tab is selected in the code behind. I am not the
best with javascript, and I am not sure how to use the get selected
tab code from the documentation page, and pass that to the code
behind. If anyone has done this before, or has a direction I can go in
please let me know. Thanks.