How to create a tag and use it in asp.net.

how to create a tag for a particular content in a page and then use it. for example a search engine displays a page of text. In that page i want to tag a particular paragaraph. is it possible.
Thank you.

Just write an anchor tag to your page, like this:

<a href="#post1" />

then in your address bar try navigating to: yourpage.aspx#post1