Как определить операционную систему в программе под .NET ?

using System;
using System.Management;

namespace ConsoleApplication1
{
class Program
{
    public static void Main()
    {
        string winos = "Select Name from Win32_OperatingSystem";
        ManagementObjectSearcher mos =
            new ManagementObjectSearcher(winos);           
        foreach (ManagementObject mo in mos.Get())
        {
            Console.WriteLine("OS Name:  {0}", mo["Name"]);
        }
        Console.ReadLine();
    }
}
}

Imports System
Imports System.Management

Namespace ConsoleApplication1
Friend Class Program
    Public Shared Sub Main()
        Dim winos As String = "Select Name from Win32_OperatingSystem"
        Dim mos As New ManagementObjectSearcher(winos)
        For Each mo As ManagementObject In mos.Get()
            Console.WriteLine("OS Name:  {0}", mo("Name"))
        Next mo
        Console.ReadLine()
    End Sub
End Class
End Namespace