C# - 查找我机器的本地 IP 地址而不是 VM 的

Question

我的机器上安装了 VirtualBox VM，因此出现了一个以太网适配器。我正在通过以下方式枚举我机器的 IP 地址列表：

       public string GetLocalIpAddress()
       {
            try
            {
                string strHostName = Dns.GetHostName();

                // Then using host name, get the IP address list..
                IPHostEntry ipEntry = Dns.GetHostEntry(strHostName);

                foreach (IPAddress ip in ipEntry.AddressList)
                {
                    if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                    {
                        return string.Format("({0})", ip.ToString());
                    }
                }
            }
            catch(Exception e)
            {
                Global.ApplicationLog.AddApplicationLog(EnumAppEventTypes.SYSTEM_ERROR, e.ToString());
            }

            return "";
        }

我的问题是虚拟机的以太网适配器也捕捉到了这种情况：

if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)

有没有办法找出我机器的本地 IP 地址而忽略我的虚拟机？

Answer 1

您可以忽略以太网适配器的名称。由于 VM 以太网适配器由有效的 NIC 驱动程序表示，因此从操作系统的角度来看，它完全等同于您机器的物理 NIC。

Answer 2

只有一种选择。虚拟机 IP 没有默认网关，所以排除所有没有默认网关的 IP。

foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
{
    var addr = ni.GetIPProperties().GatewayAddresses.FirstOrDefault();
    if (addr != null)
    {
        if (ni.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 || ni.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
        {
            Console.WriteLine(ni.Name);
            foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
            {
                if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                {
                    Console.WriteLine(ip.Address.ToString());
                }
            }
        }
    }
}

Answer 3

我正在完善 Andrej Arh 的答案，因为 GatewayAddresses 报告的 IP 地址也可以是“0.0.0.0”，而不仅仅是 null：

    public static string GetPhysicalIPAdress()
    {
        foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
        {
            var addr = ni.GetIPProperties().GatewayAddresses.FirstOrDefault();
            if (addr != null && !addr.Address.ToString().Equals("0.0.0.0"))
            {
                if (ni.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 || ni.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
                {
                    foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
                    {
                        if (ip.Address.AddressFamily == AddressFamily.InterNetwork)
                        {
                            return ip.Address.ToString();
                        }
                    }
                }
            }
        }
        return String.Empty;
    }

Answer 4

使用 WMI 并检查物理设备的 ConnectorPresent 属性。

public static string GetPhysicalIPAdress()
{
    foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
    {
        if (ConnectorPresent(ni))
        {
            if (ni.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 || ni.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
            {
                foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
                {
                    if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                    {
                        return ip.Address.ToString();
                    }
                }
            }
        }
    }
    return string.Empty;
}

private static bool ConnectorPresent(NetworkInterface ni)
{
    ManagementScope scope = new ManagementScope(@"\\localhost\root\StandardCimv2");
    ObjectQuery query = new ObjectQuery(String.Format(
        @"SELECT * FROM MSFT_NetAdapter WHERE ConnectorPresent = True AND DeviceID = '{0}'", ni.Id));
    ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query);
    ManagementObjectCollection result = searcher.Get();
    return result.Count > 0;
}