Is it possible to use the DB connection stored in the webconfig file in a codepage?

I am trying to use a datareader but do not want to redeclare the connection string in the code file.

If this is possible I would appreciate an example of how to call it.

thanks

use
sqlconnection connection=new sqlconnection();
connection.ConnectionString = ConfigurationManager.ConnectionStrings["name"].ConnectionString;

here name will be the name key of web.config file

enjoy :)