在网络上ping主机名

我如何ping网络上的主机名？

Answer 1

System.Net.NetworkInformation命名空间是您所需要的。 此链接有更多详细信息

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; } 

Answer 2

我会使用Ping类。

Answer 3

试试这个

  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); } } } }