using System;
using System.Windows.Forms;
 
namespace OSVersion
{
    public class OSVersion
    {
        static void Main(string[] args)
        {
            OperatingSystem osInfo = Environment.OSVersion;
            string lTemp = "Version string : " +
                           osInfo.VersionString + 
                           "\r\nOS Name : " + 
                           WinOS.getOSString();
 
            MessageBox.Show(lTemp);
        }
    }
 
 
 
    public static class WinOS
    {
        private static readonly int Unknown = 0;
        private static readonly int Win98 = 1;
        private static readonly int WinME = 2;
        private static readonly int WinNT4 = 3;
        private static readonly int Win2000 = 4;
        private static readonly int WinXP = 5;
        private static readonly int Win2003 = 6;
        private static readonly int WinVista = 7;
        private static readonly int Win7 = 8;
 
        private static int getOS()
        {
            Version o = Environment.OSVersion.Version;
            OperatingSystem osInfo = Environment.OSVersion;
 
 
            if (o.Major == 4 && o.Minor == 10) return Win98;
            if (o.Major == 4 && o.Minor == 90) return WinME;
            if (o.Major == 4 && o.Minor == 0) return WinNT4;
            if (o.Major == 5 && o.Minor == 0) return Win2000;
            if (o.Major == 5 && o.Minor == 1) return WinXP;
            if (o.Major == 5 && o.Minor == 2) return Win2003;
            if (o.Major == 6 && o.Minor == 0) return WinVista;
            if (o.Major == 6 && o.Minor == 1) return Win7;
            return Unknown;
        }
 
 
 
        public static String getOSString()
        {
            switch (WinOS.getOS())
            {
                case 1: return "Windows 98";
                case 2: return "Windows ME";
                case 3: return "Windows NT4";
                case 4: return "Windows 2000";
                case 5: return "Windows XP";
                case 6: return "Windows 2003 Server";
                case 7: return "Windows Vista";
                case 8: return "Windows 7";
                default: return "Unbekannt";
            }
        }
 
 
 
        public static String getSP()
        {
            return Environment.OSVersion.ServicePack;
        }
    }
 
}