Question

有没有办法将IP地址（或主机名）送到给定的MAC地址？我发现的所有内容都是使用System.Net.Dns获取主机名，反之亦然。

Answer 1

您可以使用此课程

public class IPMacMapper
{
    private static List<IPAndMac> list;

    private static StreamReader ExecuteCommandLine(String file, String arguments = "")
    {
        ProcessStartInfo startInfo = new ProcessStartInfo();
        startInfo.CreateNoWindow = true;
        startInfo.WindowStyle = ProcessWindowStyle.Hidden;
        startInfo.UseShellExecute = false;
        startInfo.RedirectStandardOutput = true;
        startInfo.FileName = file;
        startInfo.Arguments = arguments;

        Process process = Process.Start(startInfo);

        return process.StandardOutput;
    }

    private static void InitializeGetIPsAndMac()
    {
        if (list != null)
            return;

        var arpStream = ExecuteCommandLine("arp", "-a");
        List<string> result = new List<string>();
        while (!arpStream.EndOfStream)
        {
            var line = arpStream.ReadLine().Trim();
            result.Add(line);
        }

        list = result.Where(x => !string.IsNullOrEmpty(x) && (x.Contains("dynamic") || x.Contains("static")))
            .Select(x =>
            {
                string[] parts = x.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
                return new IPAndMac { IP = parts[0].Trim(), MAC = parts[1].Trim() };
            }).ToList();
    }

    public static string FindIPFromMacAddress(string macAddress)
    {
        InitializeGetIPsAndMac();
        IPAndMac item = list.SingleOrDefault(x => x.MAC == macAddress);
        if (item == null)
            return null;
        return item.IP;
    }

    public static string FindMacFromIPAddress(string ip)
    {
        InitializeGetIPsAndMac();
        IPAndMac item = list.SingleOrDefault(x => x.IP == ip);
        if (item == null)
            return null;
        return item.MAC;
    }

    private class IPAndMac
    {
        public string IP { get; set; }
        public string MAC { get; set; }
    }
}

并将其用作

var ipAddress = IPMacMapper.FindIPFromMacAddress("mac-address");
var macAddress = IPMacMapper.FindMacFromIPAddress("ip-address");

Answer 2

您正在寻找的是阅读计算机的ARP列表然后解析它以找到请求的MAC地址...... 请注意，arp -a同时具有IP和MAC，因此您只需要匹配所请求的。

Here is an example如何在C＃

中完成

在c＃中从Mac-Address获取IP

2 个答案: