i want any users in database if he change url not pass to other user
example : user1 login to databse by his user name and password and it is show in url asppagename.com/pageasp.asp?=user1 if he change user1 and write user2 he can pass to user 2 how to secure users from passing to each other
You cannot prevent user1 to goto user2 by adding this value in url.
I will suggest that you you use Sessions to store user info.
When the user logs in, store the user in session.
On the page pageasp.asp check the user value in the session.
When the user logs out, clear the session variables.