The HTMLEncode method applies HTML encoding to a specified string.
Server.HTMLEncode( string )
The following script
<%= Server.HTMLEncode("The paragraph tag: <P>") %>
produces the output
The paragraph tag: <P>
Note The preceding output will be displayed by a Web browser as
The paragraph tag: <P>
If you view source, or open the page as a text file, you will be able to see the encoded HTML.