使用SendArp来获取MAC地址

本文使用二种方式来获取macaddress.

1.

只能获取本机的.

using System.Management;

ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");

ManagementObjectCollection moc2 = mc.GetInstances();

foreach (ManagementObject mo in moc2)

{

if ((bool)mo["IPEnabled"] == true)

this.textBox1.Text = mo["MacAddress"].ToString();

mo.Dispose();

}

2. 此种方法可以获取远程MAC地址

using System.Runtime.InteropServices;

[DllImport("Iphlpapi.dll")]

static extern int SendARP(Int32 DestIP, Int32 SrcIP, ref Int64 MacAddr, ref Int32 PhyAddrLen);

[DllImport("Ws2_32.dll")]

static extern Int32 inet_addr(string ipaddr);

///<summary>

/// SendArp获取MAC地址

///</summary>

///<param name="RemoteIP">目标机器的IP地址如(192.168.1.1)</param>

///<returns>目标机器的mac 地址</returns>

public static string GetMacAddress(string RemoteIP)

{

StringBuilder macAddress = new StringBuilder();

try

{

Int32 remote = inet_addr(RemoteIP);

Int64 macInfo = new Int64();

Int32 length = 6;

SendARP(remote, 0, ref macInfo, ref length);

string temp = Convert.ToString(macInfo, 16).PadLeft(12, '0').ToUpper();

int x = 12;

for (int i = 0; i < 6; i++)

{

if (i == 5)

{

macAddress.Append(temp.Substring(x - 2, 2));

}

else

{

macAddress.Append(temp.Substring(x - 2, 2) + "-");

}

x -= 2;

}

return macAddress.ToString();

}

catch

{

return macAddress.ToString();

}

}