using System.Management

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using System.Management;中

获取CPU序列号代码
string cpuInfo = "";//cpu序列号
ManagementClass mc = new ManagementClass("Win32_Processor");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
}
moc = null;
mc = null;
return cpuInfo;

请问我要测 主板ID和声卡ID时 ManagementClass mc = new ManagementClass("？？？？？");
mo.Properties["？？？？？"].Value.ToString();

？？？？等于多少？ 高手指教！！

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对了 还有测外网IP时 又如何？？