Get the MAC,CPU number of the machine, the CPU number, the hard plate and the memory size

/// <summary>          ///get MAC address of native/// </summary>          /// <returns></returns>           Public Static stringgetmacstring () {ManagementClass madapter=NewManagementClass ("Win32_NetworkAdapterConfiguration"); Managementobjectcollection Mo=madapter.getinstances (); foreach(Managementbaseobject minchmo) {                if((BOOL) m["ipenabled"] ==true)                {                    returnm["MacAddress"].                ToString (); }} mo.            Dispose (); return NULL; //ManagementClass mc = new ManagementClass ("Win32_NetworkAdapterConfiguration"); //managementobjectcollection MOC = mc.            GetInstances (); //foreach (ManagementObject mo in MOC)//{            //    //If no IP settings are enabled for network devices, skip//if (! ( BOOL) mo["ipenabled"])//continue; //    //Get Properties//String caption = mo["caption"].              ToString (); //name//string[] addresses = (string[]) mo["IPAddress"]; //IP Address//string[] subnets = (string[]) mo["IPSubnet"]; //Subnet Mask//string[] gateways = (string[]) mo["DefaultIPGateway"]; //Gateway//string[] dnses = (string[]) mo["DNSServerSearchOrder"]; //DNS//Managementbaseobject Newip; //    //modify IP and subnet masks//NEWIP = mo.            Getmethodparameters ("EnableStatic"); //newip["IPAddress"] = new string[] {"192.168.2.51"}; //newip["SubnetMask"] = new string[] {"255.255.255.0"};//Modify IP at the same time, you need to fill in the subnet mask//mo.            InvokeMethod ("EnableStatic", NEWIP, NULL); //    //Set the gateway address//NEWIP = mo.            Getmethodparameters ("SetGateways"); //newip["DefaultIPGateway"] = new string[] {"192.168.2.1"}; //mo.            InvokeMethod ("SetGateways", NEWIP, NULL); //    //set up DNS//NEWIP = mo.            Getmethodparameters ("SetDNSServerSearchOrder"); //newip["DNSServerSearchOrder"] = new string[] {"192.168.1.10"}; //mo. InvokeMethod ("SetDNSServerSearchOrder", NEWIP, null);        }        /// <summary>          ///get the number of CPUs/// </summary>          /// <returns></returns>          Public Static intGetcpucount () {Try            {                using(ManagementClass mcpu =NewManagementClass ("Win32_Processor") {managementobjectcollection CPUs=mcpu.getinstances (); returnCPUs.                Count; }            }            Catch            {            }            return-1; }        /// <summary>          ///how often to get the CPU the use of a string type array is mainly due to the multi-core of the CPU/// </summary>          /// <returns></returns>           Public Static string[] Getcpumhz () {ManagementClass mc=NewManagementClass ("Win32_Processor"); Managementobjectcollection CPUs=MC.            GetInstances (); string[] MHz =New string[CPUs.            Count]; intc =0; ManagementObjectSearcher Mysearch=NewManagementObjectSearcher ("SELECT * from Win32_Processor"); foreach(ManagementObject moinchMysearch.get ()) {Mhz[c]= mo. properties["CurrentClockSpeed"].                Value.tostring (); C++; } MC.            Dispose ();            Mysearch.dispose (); returnmHz; }        /// <summary>          ///get the size of the hard disk/// </summary>          /// <returns></returns>           Public Static stringGetsizeofdisk () {ManagementClass mc=NewManagementClass ("win32_diskdrive"); Managementobjectcollection MoJ=MC.            GetInstances (); foreach(ManagementObject minchMoJ) {                returnm.properties["Size"].            Value.tostring (); }            return "-1"; }        /// <summary>          ///get the size of the memory/// </summary>          /// <returns></returns>           Public Static stringGetsizeofmemery () {ManagementClass mc=NewManagementClass ("Win32_OperatingSystem"); Managementobjectcollection MOC=MC.            GetInstances (); DoubleSizeall =0.0; foreach(ManagementObject minchMOC) {                if(m.properties["totalvisiblememorysize"]. Value! =NULL) {Sizeall+ = Convert.todouble (m.properties["totalvisiblememorysize"].                Value.tostring ()); }} MC=NULL; MoC.            Dispose (); returnsizeall.tostring (); }

Get the MAC,CPU number of the machine, the CPU number, the hard plate and the memory size