Asp.net实现的ping功能，可在虚拟主机执行
public bool Ping(string ip)
{ System.Net.NetworkInformation.Ping p =
new System.Net.NetworkInformation.Ping();
System.Net.NetworkInformation.PingOptions options =
new System.Net.NetworkInformation.PingOptions();
options.DontFragment = true;
string data = "Test Data!";
byte[] buffer = Encoding.ASCII.GetBytes(data);
int timeout = 1000; // Timeout 时间，单位：毫秒
System.Net.NetworkInformation.PingReply reply =
p.Send(ip, timeout, buffer, options);
if (reply.Status ==
System.Net.NetworkInformation.IPStatus.Success)
return true;
else
return false;
}转载优特建站：http://www.youtiy.com/Articles/Item.aspx?Id=257