using System.Management;using System.Net;

    public class PCInfoHelper    {        /// <summary>        /// 操作系统的登录用户名        /// </summary>        /// <returns></returns>        public static string GetUserName()        {            try            {                string username = "";                ManagementClass mc = new ManagementClass("Win32_ComputerSystem");                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)                {                    username = mo["UserName"].ToString();                }                return username;            }            catch            {                return "unknow";            }        }        /// <summary>        /// 获取MAC地址        /// </summary>        /// <returns></returns>        public static string GetMacAddress()        {            try            {                string mac = "";                ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)                {                    if ((bool)mo["IPEnabled"] == true)                    {                        mac = mo["MacAddress"].ToString();                        break;                    }                }                return mac;            }            catch            {                return "unknow";            }        }        /// <summary>        /// 获取硬盘ID        /// </summary>        /// <returns></returns>        public static string GetDiskID()        {            try            {                String diskid = "";                ManagementClass mc = new ManagementClass("Win32_DiskDrive");                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)                {                    diskid = (String)mo.Properties["Model"].Value.ToString();                }                return diskid;            }            catch            {                return "unknow";            }        }        /// <summary>        /// 获取CPU ID        /// </summary>        /// <returns></returns>        public static string GetCpuID()        {            try            {                string cpuid = "";                ManagementClass mc = new ManagementClass("Win32_Processor");                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)                {                    cpuid = mo.Properties["ProcessorId"].Value.ToString();                }                return cpuid;            }            catch            {                return "unknow";            }        }        /// <summary>        /// 系统名称        /// </summary>        /// <returns></returns>        public static string GetSystemType()        {            try            {                string systype = "";                ManagementClass mc = new ManagementClass("Win32_ComputerSystem");                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)                {                    systype = mo["SystemType"].ToString();                }                return systype;            }            catch            {                return "unknow";            }        }        /// <summary>        /// 获取物理内存        /// </summary>        /// <returns></returns>        public static string GetTotalPhysicalMemory()        {            try            {                string phymemory = "";                ManagementClass mc = new ManagementClass("Win32_ComputerSystem");                ManagementObjectCollection moc = mc.GetInstances();                foreach (ManagementObject mo in moc)                {                    phymemory = mo["TotalPhysicalMemory"].ToString();                }                return phymemory;            }            catch            {                return "unknow";            }        }        /// <summary>        /// 获取客户端内网IP地址        /// </summary>        /// <returns></returns>        public static string GetLocalIPAddress()        {            try            {                string localIP = null;                IPHostEntry ipHost = System.Net.Dns.GetHostEntry(Dns.GetHostName());                IPAddress ipaddress = ipHost.AddressList[0];                localIP = ipaddress.ToString();                return "内网IP地址：" + localIP;            }            catch            {                return "内网IP地址：unknown";            }        }        /// <summary>        /// 获得客户端外网IP地址        /// </summary>        /// <returns>IP地址</returns>        public static string GetInternetIPAddress()        {            try            {                string internetIP = "";                using (WebClient webClient = new WebClient())                {                    internetIP = webClient.DownloadString("http://www.coridc.com/ip");//从外部网页获得IP地址                    //判断IP是否合法                    if (!System.Text.RegularExpressions.Regex.IsMatch(internetIP, "[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}"))                    {                        internetIP = webClient.DownloadString("http://fw.qq.com/ipaddress");//从腾讯提供的API中获得IP地址                    }                }                return "外网IP地址：" + internetIP;            }            catch            {                return "外网IP地址：unknown";            }        }    }