这个问题很简单
我平时一般是这样处理的
{
IPHostEntry myHost = Dns.GetHostByAddress(myIp);
HostName = myHost.HostName.ToString();
}
catch
{
HostName = "";
}
但是这样有个问题，新系统使用环境为Vista Vista内置了防火墙 所以再这样获取主机的姓名了
于是采取了这样的方法，调用系统API获取MAC地址 若存在则确定主机存在：
{
[DllImport("Iphlpapi.dll")]
private static extern int SendARP(Int32 dest, Int32 host, ref Int64 mac, ref Int32 length);
[DllImport("Ws2_32.dll")]
private static extern Int32 inet_addr(string ip);
public static string GetRemoteMac(string clientIP)
{
string ip = clientIP;
Int32 ldest = inet_addr(ip);
Int64 macinfo = new Int64();
Int32 len = 6;
try
{
SendARP(ldest, 0, ref macinfo, ref len);
}
catch
{
return "";
}
string originalMACAddress = Convert.ToString(macinfo, 16);
if (originalMACAddress.Length < 12)
{
originalMACAddress = originalMACAddress.PadLeft(12, '0');
}
string macAddress;
if (originalMACAddress != "0000" && originalMACAddress.Length == 12)
{
string mac1, mac2, mac3, mac4, mac5, mac6;
mac1 = originalMACAddress.Substring(10, 2);
mac2 = originalMACAddress.Substring(8, 2);
mac3 = originalMACAddress.Substring(6, 2);
mac4 = originalMACAddress.Substring(4, 2);
mac5 = originalMACAddress.Substring(2, 2);
mac6 = originalMACAddress.Substring(0, 2);
macAddress = mac1 + "-" + mac2 + "-" + mac3 + "-" + mac4 + "-" + mac5 + "-" + mac6;
}
else
{
macAddress = "";
}
return macAddress.ToUpper();
}
}
不知道大家有没有别的好点的方法呢？