ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject  mo in moc)
{
    //如果没有启用IP设置的网络设备则跳过   
    if (!(bool)mo["IPEnabled"])
        continue;

// 获取属性
    string caption = mo["Caption"].ToString();              //名称
    string[] addresses = (string[])mo["IPAddress"];         //IP地址
    string[] subnets = (string[])mo["IPSubnet"];            //子网掩码
    string[] gateways = (string[])mo["DefaultIPGateway"];   //网关
    string[] dnses = (string[])mo["DNSServerSearchOrder"];  //DNS

ManagementBaseObject newIP;

// 修改IP及子网掩码
    newIP = mo.GetMethodParameters("EnableStatic");    
    newIP["IPAddress"] = new string[] { "192.168.2.51" };
    newIP["SubnetMask"] = new string[] { "255.255.255.0" }; //修改IP同时，需要填写子网掩码
    mo.InvokeMethod("EnableStatic", newIP, null);

// 设置网关地址 
    newIP = mo.GetMethodParameters("SetGateways");
    newIP["DefaultIPGateway"] = new string[] { "192.168.2.1" };
    mo.InvokeMethod("SetGateways", newIP, null);

// 设置DNS 
    newIP = mo.GetMethodParameters("SetDNSServerSearchOrder");
    newIP["DNSServerSearchOrder"] = new string[] { "192.168.1.10" };
    mo.InvokeMethod("SetDNSServerSearchOrder", newIP, null);
   }

 ///获取cpu序列号///</summary>///<returns> string </returns>public string GetCpuInfo(){string strID = "";try{ManagementClass mc = new ManagementClass("Win32_Processor");ManagementObjectCollection moc = mc.GetInstances();foreach (ManagementObject mo in moc){strID = mo.Properties["ProcessorId"].Value.ToString();break;}}catch (Exception ex){throw new Exception("WMI:GetCpuInfo" + ex.ToString() + ex.Data.ToString()+ ex.HelpLink.ToString());}return strID;}/// <summary>/// 获取主板的编号/// </summary>/// <returns></returns>public string GetMainBoardID(){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;}/// <summary>/// 获取BIOS编号/// </summary>/// <returns></returns>public string GetBiosID(){ManagementClass mc = new ManagementClass("Win32_BIOS");ManagementObjectCollection moc = mc.GetInstances();string strID = null;foreach (ManagementObject mo in moc){strID = mo.Properties["SerialNumber"].Value.ToString();break;}return strID;}///<summary>///   获取硬盘ID///</summary>///<returns> string </returns>public string GetHDid(){//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;const int MAX_FILENAME_LEN = 256;int retVal = 0;GetVolumeInformation("c:\\",null,MAX_FILENAME_LEN,ref retVal,0,0,null,MAX_FILENAME_LEN);return retVal.ToString("X"); }///<summary>///   获取网卡硬件地址///</summary>///<returns> string </returns>public string GetMacAddress(){string MoAddress = "0000000000";using (ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration")){ManagementObjectCollection moc2 = mc.GetInstances();foreach (ManagementObject mo in moc2){if ((bool)mo["IPEnabled"] == true){MoAddress = mo["MacAddress"].ToString();MoAddress = MoAddress.Replace(":", "");}mo.Dispose();}}//NetworkInterface[] ntif = NetworkInterface.GetAllNetworkInterfaces();//if (ntif.Length > 0)//{//    string temp = ntif[0].GetPhysicalAddress().ToString();//}return MoAddress.ToString();}