C#获取电脑MAC地址 "OFFLINE"

Question

在c#中没有互联网连接时，有没有办法获取计算机的mac地址？当我有连接时我能得到，但当我离线时我不能得到。但强烈要求我的工作需要 mac 地址。

我的在线代码；

var macAddr =
      (from nic in NetworkInterface.GetAllNetworkInterfaces()
       where nic.OperationalStatus == OperationalStatus.Up
       select nic.GetPhysicalAddress().ToString()).FirstOrDefault();

Answer 1

来自 WMI:

public static string GetMACAddress1()
{
    ManagementObjectSearcher objMOS = new ManagementObjectSearcher("Select * FROM Win32_NetworkAdapterConfiguration");
    ManagementObjectCollection objMOC = objMOS.Get();
    string macAddress = String.Empty;
    foreach (ManagementObject objMO in objMOC)
    {
        object tempMacAddrObj = objMO["MacAddress"];

        if (tempMacAddrObj == null) //Skip objects without a MACAddress
        {
            continue;
        }
        if (macAddress == String.Empty) // only return MAC Address from first card that has a MAC Address
        {
            macAddress = tempMacAddrObj.ToString();              
        }
        objMO.Dispose();
    }
    macAddress = macAddress.Replace(":", "");
    return macAddress;
}

来自 System.Net 命名空间:

public static string GetMACAddress2()
{
    NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
    String sMacAddress = string.Empty;
    foreach (NetworkInterface adapter in nics)
    {
        if (sMacAddress == String.Empty)// only return MAC Address from first card  
        {
            //IPInterfaceProperties properties = adapter.GetIPProperties(); Line is not required
            sMacAddress = adapter.GetPhysicalAddress().ToString();
        }
    } return sMacAddress;
}

略微修改自 How to get the MAC address of system - C-Sharp Corner