Hi,
What you want to do exactly .
Instead of this you can follow another way like
place one button and div tags
show grid data in popup while user clicks on that button.In that popup if user selects any rows then close that popup and show particular data in div tag
According to your question we can not do that thing If you see this link you get idea on that
http://stackoverflow.com/questions/607529/asp-net-how-to-render-html-tags-in-a-listitem-text-property
All the Best