using System;
using Microsoft.Win32;
using System.Security.Permissions;
[RegistryPermissionAttribute(SecurityAction.Demand)]
class Class1 {
static void Main(string[] args) {
RegistryKey myRegKey = Registry.LocalMachine;
myRegKey = myRegKey.OpenSubKey("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion");
Object oValue = myRegKey.GetValue("RegisteredOwner");
Console.WriteLine("OS Registered Owner: {0}", oValue.ToString());
}
}