C#获取计算机唯一编码 --MAC地址，IP地址，根据IP获得MAC地址，CPU信息，磁盘信息，主板信息

注意点，如果开发需要获取计算机的唯一编码，虽然MAC地址是比较常用的，但是建议用计算机的磁盘信息，因为有些电脑的MAC地址有多个，换个网口很容易混淆。

为什么不用CPUID：应为CPUID不是唯一的哟

主板信息也不推荐，应为有些电脑获取不到主板信息。

磁盘ID:只要是正版的，就是唯一的

直接上代码：

/// <summary>
        /// 获取IPV4地址集合，就是获取本机所有的IPV4地址
        /// </summary>
        /// <returns></returns>
        public static List<string> GetClientLocalIPv4AddressList()
        {
            List<string> ipAddressList = new List<string>();
            try
            {
                IPHostEntry ipHost = Dns.Resolve(Dns.GetHostName());
                foreach (IPAddress ipAddress in ipHost.AddressList)
                {
                    if (!ipAddressList.Contains(ipAddress.ToString()))
                    {
                        ipAddressList.Add(ipAddress.ToString());
                    }
                }
            }
            catch
            {

            }
            return ipAddressList;
        }

   /// <summary>
        /// 获取计算机所有的MAC地址
        /// </summary>
        /// <returns></returns>
        public string[] GetAllMacInfo()
        {
            List<string> LSMac = new List<string>();
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                if ((bool)mo["IPEnabled"]==true)
                {
                    LSMac.Add(mo["MacAddress"].ToString().Replace(":",""));
                }
            }
            mc = null;
            moc = null;
            return LSMac.ToArray() ;
        }
  ///<summary>
        /// 根据IP获取MAC地址
        ///</summary>
        ///<param name="RemoteIP">目标机器的IP地址如(192.168.1.1)</param>
        ///<returns>目标机器的mac 地址</returns>
        public  string GetMacAddress(string RemoteIP)
        {
            StringBuilder macAddress = new StringBuilder();
            try
            {
                Int32 remote = inet_addr(RemoteIP);
                Int64 macInfo = new Int64();
                Int32 length = 6;
                SendARP(remote, 0, ref macInfo, ref length);
                string temp = Convert.ToString(macInfo, 16).PadLeft(12, '0').ToUpper();
                int x = 12;
                for (int i = 0; i < 6; i++)
                {
                    if (i == 5)
                    {
                        macAddress.Append(temp.Substring(x - 2, 2));
                    }
                    else
                    {
                        macAddress.Append(temp.Substring(x - 2, 2));
                    }

                    x -= 2;
                }
                return macAddress.ToString();
            }
            catch
            {
                return macAddress.ToString();
            }
        }

   /// <summary>  
        /// 获取CpuID  
        /// </summary>  
        /// <returns>CpuID</returns>  
        public static string GetCpuID()
        {
            try
            {
                string strCpuID = string.Empty;
                ManagementClass mc = new ManagementClass("Win32_Processor");
                ManagementObjectCollection moc = mc.GetInstances();
                foreach (ManagementObject mo in moc)
                {
                    strCpuID = mo.Properties["ProcessorId"].Value.ToString();
                }
                moc = null;
                mc = null;
                return strCpuID;
            }
            catch
            {
                return "unknown";
            }
        }
 /// <summary>
        /// 获取硬盘ID
        /// </summary>
        /// <returns></returns>
        public static string GetDiskID()
        {
            ManagementClass mc = new ManagementClass("Win32_PhysicalMedia");
            //网上有提到，用Win32_DiskDrive，但是用Win32_DiskDrive获得的硬盘信息中并不包含SerialNumber属性。   
            ManagementObjectCollection moc = mc.GetInstances();
            string strID = null;
            foreach (ManagementObject mo in moc)
            {
                strID = mo.Properties["SerialNumber"].Value.ToString();
                break;
            }
            return strID;
        }
        /// <summary>
        /// 获取主板ID
        /// </summary>
        /// <returns></returns>
        public static string GetMainBordID()
        {
            ManagementClass mc = new ManagementClass("Win32_BaseBoard");
            ManagementObjectCollection moc = mc.GetInstances();
            string strID = null;
            foreach (ManagementObject mo in moc)
            {
                strID = mo.Properties["SerialNumber"].Value.ToString();
                break;
            }
            return strID;
        }