You need to import the System.Net namespace in your code for this to work. This will support IPv4 and IPv6.
public string GetMACAddress()
{
NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
String sMacAddress = string.Empty;
foreach (NetworkInterface adapter in nics)
{
if (sMacAddress == String.Empty)// only return MAC Address from first card
{
IPInterfaceProperties properties = adapter.GetIPProperties();
sMacAddress = adapter.GetPhysicalAddress().ToString();
}
} return sMacAddress;
}
To get the client MAC address only way we can rely on JavaScript and Active X control of Microsoft.It is only work in IE if Active X enable for IE. As the ActiveXObject is not available with the Firefox, its not working with the firefox and is working fine in IE.
This script is for IE only:
<script language="javascript" type="text/javascript">
function showMacAddress() {
var obj = new ActiveXObject("WbemScripting.SWbemLocator");
var s = obj.ConnectServer(".");
var properties = s.ExecQuery("SELECT * FROM Win32_NetworkAdapterConfiguration");
var e = new Enumerator(properties);
var output;
output = '<table border="0" cellPadding="5px" cellSpacing="1px" bgColor="#CCCCCC">';
output = output + '<tr bgColor="#EAEAEA"><td>Caption</td><td>MACAddress</td></tr>';
while (!e.atEnd()) {
e.moveNext();
var p = e.item();
if (!p) continue;
output = output + '<tr bgColor="#FFFFFF">';
output = output + '<td>' + p.Caption; +'</td>';
output = output + '<td>' + p.MACAddress + '</td>';
output = output + '</tr>';
}
output = output + '</table>';
document.getElementById("box").innerHTML = output;
}
</script>