HI TO ALL please i need html codes that prevent the visitor to view the content of the forum until registration best of luck for all
What forum software are you using? Most forum software allows you to limit access to certain areas of your forum by user category (guest, registered, admin, whatever) - at the very least your forum software should allow you to limit certain forum sections to registered users only.
As Kerosene said, the forum software should have this built in. In phpBB: Go to your Administration Control Panel, and click the Permissions tab. On the left, choose Groups' Permissions, and select Guest from the dropdown bar. Now set the permissions you want. I'm sure that other systems are very similar.