获取电脑硬件唯一编号

 #region 获取用户操作系统
        /// <summary>
        /// 获取用户操作系统
        /// </summary>
        /// <returns></returns>
        public static string OpeartionSystem()
        {
            RegistryKey rk;
            rk = Registry.LocalMachine.OpenSubKey("Software\\Microsoft\\Windows NT\\CurrentVersion");
            string system = string.Empty;
            string[] ver = { "Windows Server 2003", "Windows Server 2000", "Windows 7", "Windows XP", "Windows Vista" };
            if (rk != null)
            {
                string SysVersion = rk.GetValue("ProductName").ToString();
                for (int i = 0; i < ver.Length; i++)
                {
                    if (SysVersion.ToLower().Contains(ver[i].ToLower()))
                    {
                        system = ver[i];
                        break;
                    }
                    else
                    {
                        system = SysVersion;
                    }
                }
            }
            return system;
        }
        #endregion

        #region 获取IE浏览器版本号
        /// <summary>
        /// 获取IE浏览器版本号
        /// </summary>
        /// <returns></returns>
        public static int Browser()
        {
            RegistryKey rk;
            rk = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Internet Explorer");
            int version = 0;
            if (rk != null)
            {
                string verStr = rk.GetValue("Version").ToString();
                version = Convert.ToInt32(verStr.Split('.')[0]);
            }
            return version;
        }
        #endregion

        #region 获取内存
        /// <summary>
        /// 获取内存
        /// </summary>
        /// <returns></returns>
        public static int Memory()
        {
            ManagementObjectSearcher Searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMemory");
            long rl = 0;
            int memorySize = 0;