12.9. Determine Whether the Current User Is a Member of a Specific Windows Group

Problem

You need to determine if the current user of your application is a member of a specific Windows user group.

Solution

Obtain a System.Security.Principal.WindowsIdentity object representing the current Windows user by calling the Shared method WindowsIdentity.GetCurrent. Create a System.Security.Principal.WindowsPrincipal class using the WindowsIdentity class, and then call the method IsInRole of the WindowsPrincipal object.

How It Works

The role-based security (RBS) mechanism of the .NET Framework abstracts the user-based security features of the underlying operating system through the following two key interfaces:

  • The System.Security.Principal.IIdentity ...

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