Enable Some Control by Permisstion C#

I think you should not ask such high level questions(It dosent provide much details about your application) because it is not the code problem but it depends upon how you have actually implemented permissions in your current architecture. But just for your knowledge we can achieve it in this way:

1. You have Users Table, Create a Role table. Suppose two roles are there Admin & normal User
2. Now Create a UserRoleMapping table in which you can assign different roles to different users
3. Now create a Table for each Screen you add in your application. This table will contain the name of each screen(Can contain other details according to the requirement).
4. Create a Table for Necessary Actions that user can perform. Suppose each screen can have following defined functionalities: Add, Edit, Delete, View, Print etc.
5. Create table ScreenActionMapping which will map which all functionalities are present for each screen
6. Create Table Permissions, this table will contain the mapping of Role, ScrenActionMapping.
7. So now when the user logs in you have user id of that user, make a database hit, get the role of the user, corresponding to that role get all the data in Permissions and save it in user session. Now When the user comes to a particular screen you can check if the user is allowed to perform particular action and based on that you can show and hide the buttons.
8. Additinally with this approach you can also get that if the user is having permissions to view that screen or not.

Hope it helps...

Regards
AJ