Make the programs work on a specific windows version

        private void Form1_Load(object sender, EventArgs e)
        {
            if (!IsWin7())
            {
                Application.Exit();
            }
        }
        bool IsWin7()
        {
            return Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor == 1;
        }
        bool IsWinVista()
        {
            return Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor == 0;
        }

others windows versions: Server 2008 R2 Major=6 Minor=1 Server 2008 Major=6 Minor=0 Server 2003 5 2 XP 5 1 2000 5 0 NT4 4 0 ME 4 90 98 4 10