C# 獲取操作系統類型

private string GetSystemType()
        {
            string ssWin = string.Empty;
            OperatingSystem os = Environment.OSVersion;
            switch (os.Platform)
            {
                case PlatformID.Win32Windows:
                    switch (os.Version.Minor)
                    {
                        case 0:
                            ssWin = "Windows   95 ";
                            break;
                        case 10:
                            if (os.Version.Revision.ToString() == "2222A ")
                                ssWin = "Windows 98 第二版 ";
                            else
                                ssWin = "Windows 98 ";
                            break;
                        case 90:
                            ssWin = "Windows Me ";
                            break;
                    }
                    break;
                case PlatformID.Win32NT:
                    switch (os.Version.Major)
                    {
                        case 3:
                            ssWin = "Windows NT 3.51 ";
                            break;
                        case 4:
                            ssWin = "Windows NT 4.0 ";
                            break;
                        case 5:
                            switch (os.Version.Minor)
                            {
                                case 0:
                                    ssWin = "Windows 2000 ";
                                    break;
                                case 1:
                                    ssWin = "Windows XP ";
                                    break;
                                case 2:
                                    ssWin = "Windows 2003 ";
                                    break;
                            }
                            break;
                        case 6:
                            switch (os.Version.Minor)
                            {
                                case 0:
                                    ssWin = "Windows Vista ";
                                    break;
                                case 1:
                                    ssWin = "Windows 7 ";
                                    break;
                            }
                            break;
                    }
                    break;
            }
            return ssWin;
        }