C#获得计算机#x27；s MAC地址“；“离线”；

在c#中没有internet连接的情况下，有没有办法获取计算机的mac地址？ 当我有连接时，我可以获取，但当我脱机时，我无法获取。但我强烈需要我的工作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();

您可以在C#（

System.Management

）中使用WMI来获取包含

MACAddress

属性的

Win32\u NetworkAdapter

的列表

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;
}

从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;
}

---

从

稍作修改，您是否可以删除

其中nic.OperationalStatus==OperationalStatus.Up

行？联机时，mac地址；4CEB428D5072脱机时，mac地址为4CEB428D5073。为什么？行

IPInterfaceProperties=adapter.GetIPProperties（）需要？@Joel不，这行代码不是必需的，因为我刚刚在我的开发设备上运行了测试。更新答案以反映我的测试。