在指定的IP地址中获得一个设备的MAC（物理）地址代码,CSharp代码库,德仔网

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【CSharp】在指定的IP地址中获得一个设备的MAC（物理）地址

作者:dezai / 发布于2014/9/11/ 622


	using System.Net;
	using System.Net.NetworkInformation;

	/// <summary>
	/// Holds utilities for working with networks, Ethernet, etc.
	/// </summary>
	public static class NetworkUtils
	{
	 //
	http://www.codeproject.com/KB/IP/host_info_within_network.aspx
	 [System.Runtime.InteropServices.DllImport("iphlpapi.dll",
	ExactSpelling = true)]
	 static extern int SendARP(int DestIP, int SrcIP, byte[]
	pMacAddr, ref int PhyAddrLen);

	 /// <summary>
	 /// Gets the MAC address (<see cref="PhysicalAddress"/>)
	associated with the specified IP.
	 /// </summary>
	 /// <param name="ipAddress">The remote IP address.</param>
	 /// <returns>The remote machine's MAC address.</returns>
	 public static PhysicalAddress GetMacAddress(IPAddress
	ipAddress)
	 {
	 const int MacAddressLength = 6;
	 int length = MacAddressLength;
	 var macBytes = new byte[MacAddressLength];
	 SendARP(BitConverter.ToInt32(ipAddress.GetAddressBytes(),
	0), 0, macBytes, ref length);
	 return new PhysicalAddress(macBytes);
	 }
	}

	[TestClass()]
	public class NetworkUtilsTests
	{
	 [TestMethod()]
	 public void GetMacAddress_BroadcastIP_NonzeroMac()
	 {
	 IPAddress ipAddress = IPAddress.Broadcast;

	 PhysicalAddress actual = NetworkUtils.GetMacAddress
	(ipAddress);
	 Console.WriteLine(actual.ToString());

	 Assert.AreNotEqual(PhysicalAddress.None, actual);
	 }
	}

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　MAC　　MAC地址　　 IP地址　

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