I am developing a web program in ASP.net. I have a LoginName control on in program that will display the name of the logged in user. I want to be able to tell the program to retrieve information on the user from the database by pointing to the LoginName control. But when I Configure my sqldatasource to filter the database, it does not give the LoginName control as one of the choices. How can I get the database to "see" the LoginName control to filter the data?