什麼都不說了。看代碼:


/**//// <summary>

/// 取Mac地址

/// </summary>

/// <param name="DestIP">目標IP</param>

/// <param name="SrcIP">源IP</param>

/// <param name="pMacAddr">Mac地址</param>

/// <param name="PhyAddrLen">Mac地址的長度</param>

/// <returns></returns>

[DllImport("iphlpapi.dll", ExactSpelling = true)]

public static extern int SendARP(int DestIP, int SrcIP, [Out] byte[] pMacAddr, ref int PhyAddrLen);

取Mac地址源碼:

IPAddress ip = null;

try


...{

ip = IPAddress.Parse(textBox1.Text);//textBox1是輸入IP地址的文本框

}

catch


...{

MessageBox.Show("請勿輸入非法IP地址", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);

return;

}

byte[] b = new byte[6];

int len = b.Length;

int r = SendARP((int)ip.Address, 0, b, ref len);

label2.Text = "MAC地址為:" + BitConverter.ToString(b, 0, 6);//label2為顯示Mac地址的label控件