It's very common purpose when it comes to insert advertising scripts
or other html codes in a joomla article.you can easily create a plugin
which can insert your code after title or content or before content
of the article.Following way i demonstrate how to achieve
this great task -

asp.net has default password recovery control and methods
to implement password recovery.you just need to use
asp.net membership provider in your app and add the
PasswordRecovery control in a page by which you want
to recover password.

access database file is easy to use than sql server
or MySql server databases.for accessing access db
System.Data.OleDb namespace used.following are
steps are needed to use access db in .net
application.