Visual Basic 2008 Recipes: A Problem-Solution Approach

12.10. Restrict Which Users Can Execute Your Code

Problem

You need to restrict which users can execute elements of your code based on the user's name or the roles of which the user is a member.

Solution

Use the permission class System.Security.Permissions.PrincipalPermission and its attribute counterpart System.Security.Permissions.PrincipalPermissionAttribute to protect your program elements with RBS demands.

How It Works

The .NET Framework supports both imperative and declarative RBS (refer to recipe 12-9) demands. The class PrincipalPermission provides support for imperative security statements, and its attribute counterpart PrincipalPermissionAttribute provides support for declarative security statements. RBS demands use the same syntax ...