how to know user login site through active directory or dnn built in login or any other(host,admin etc)

thanks advance

thanks for your reply

you say correct, these two patterns we know about ad login, but problem is how to get windowauthentication value (true,false)

thanks for your reply.

i want to create two controls for login ,

1st ad users if ad exist.

2nd form base users if ad does not exist.

3rd for dotnetnuke built in users (host,admin etc)

if user login by ad then i want to display some different menu's and also when i want to add users on db then add from ad.

if ad not exist then i want to display some different menu's and also add user through form on db

so please tell me how to do this thing.

Thanks