设置本地网络为自动获取

ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
    if (!(bool)mo["IPEnabled"]) continue;
    mo.InvokeMethod("SetDNSServerSearchOrder", null);
    mo.InvokeMethod("EnableStatic", null);
    mo.InvokeMethod("SetGateways", null);
    mo.InvokeMethod("EnableDHCP", null);
    break;
}