Ping sur un nom d'hôte sur le réseau

Le Système.Net.NetworkInformation espace de Noms est ce que vous avez besoin.
Cette lien a plus de détails

public static string PingHost(string host)
{
//string to hold our return messge
string returnMessage = string.Empty;
//IPAddress instance for holding the returned host
IPAddress address = GetIpFromHost(ref host);
//set the ping options, TTL 128
PingOptions pingOptions = new PingOptions(128, true);
//create a new ping instance
Ping ping = new Ping();
//32 byte buffer (create empty)
byte[] buffer = new byte[32];
//first make sure we actually have an internet connection
if (HasConnection())
{
//here we will ping the host 4 times (standard)
for (int i = 0; i < 4; i++)
{
try
{
//send the ping 4 times to the host and record the returned data.
//The Send() method expects 4 items:
//1) The IPAddress we are pinging
//2) The timeout value
//3) A buffer (our byte array)
//4) PingOptions
PingReply pingReply = ping.Send(address, 1000, buffer, pingOptions);
//make sure we dont have a null reply
if (!(pingReply == null))
{
switch (pingReply.Status)
{
case IPStatus.Success:
returnMessage = string.Format("Reply from {0}: bytes={1} time={2}ms TTL={3}", pingReply.Address, pingReply.Buffer.Length, pingReply.RoundtripTime, pingReply.Options.Ttl);
break;
case IPStatus.TimedOut:
returnMessage = "Connection has timed out...";
break;
default:
returnMessage = string.Format("Ping failed: {0}", pingReply.Status.ToString());
break;
}
}
else
returnMessage = "Connection failed for an unknown reason...";
}
catch (PingException ex)
{
returnMessage = string.Format("Connection Error: {0}", ex.Message);
}
catch (SocketException ex)
{
returnMessage = string.Format("Connection Error: {0}", ex.Message);
}
}
}
else
returnMessage = "No Internet connection found...";
//return the message
return returnMessage;
}

Essayer cette

 using System;
using System.Net;
using System.Net.NetworkInformation;
using System.Text;
namespace Examples.System.Net.NetworkInformation.PingTest
{
public class PingExample
{
//args[0] can be an IPaddress or host name.
public static void Main (string[] args)
{
Ping pingSender = new Ping ();
PingOptions options = new PingOptions ();
//Use the default Ttl value which is 128,
//but change the fragmentation behavior.
options.DontFragment = true;
//Create a buffer of 32 bytes of data to be transmitted.
string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
byte[] buffer = Encoding.ASCII.GetBytes (data);
int timeout = 120;
PingReply reply = pingSender.Send (args[0], timeout, buffer, options);
if (reply.Status == IPStatus.Success)
{
Console.WriteLine ("Address: {0}", reply.Address.ToString ());
Console.WriteLine ("RoundTrip time: {0}", reply.RoundtripTime);
Console.WriteLine ("Time to live: {0}", reply.Options.Ttl);
Console.WriteLine ("Don't fragment: {0}", reply.Options.DontFragment);
Console.WriteLine ("Buffer size: {0}", reply.Buffer.Length);
}
}
}
}