Iterate through the group names to see if the current user is a member of each one
using System;
using System.Security.Principal;
class MainClass
{
public static void Main (string[] args)
{
WindowsIdentity identity = WindowsIdentity.GetCurrent();
WindowsPrincipal principal = new WindowsPrincipal(identity);
foreach (string role in args)
{
Console.WriteLine("Is {0} a member of {1}? = {2}", identity.Name, role, principal.IsInRole(role));
}
}
}
