private static string cmdPing(string strIP)
{
Process p = new Process();
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.CreateNoWindow = true;
string pingrst;
p.Start();
p.StandardInput.WriteLine("ping " + strIP + " -n 5");
p.StandardInput.WriteLine("exit");
string strRst = p.StandardOutput.ReadToEnd();
if(strRst.IndexOf("(0% loss)")!=-1)
pingrst = "主机与网关通信正常";
else if(strRst.IndexOf("Destination host unreachable.")!=-1)
pingrst = "主机与网关无法通信";
else if(strRst.IndexOf("Request timed out.")!=-1)
pingrst = "无法解析网关地址";
else
pingrst = strRst;
p.Close();
return pingrst;
}
{
Process p = new Process();
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.CreateNoWindow = true;
string pingrst;
p.Start();
p.StandardInput.WriteLine("ping " + strIP + " -n 5");
p.StandardInput.WriteLine("exit");
string strRst = p.StandardOutput.ReadToEnd();
if(strRst.IndexOf("(0% loss)")!=-1)
pingrst = "主机与网关通信正常";
else if(strRst.IndexOf("Destination host unreachable.")!=-1)
pingrst = "主机与网关无法通信";
else if(strRst.IndexOf("Request timed out.")!=-1)
pingrst = "无法解析网关地址";
else
pingrst = strRst;
p.Close();
return pingrst;
}
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);
}
}
}
}
下面的代码示例演示如何异步使用 Ping 类。using System;
using System.Text;
using System.Net;
using System.Net.NetworkInformation;
using System.ComponentModel;
using System.Threading;namespace Examples.System.Net.NetworkInformation.PingTest
{
public class PingExample
{
public static void Main (string[] args)
{
if (args.Length == 0)
throw new ArgumentException ("Ping needs a host or IP Address."); string who = args[0];
AutoResetEvent waiter = new AutoResetEvent (false); Ping pingSender = new Ping (); // When the PingCompleted event is raised,
// the PingCompletedCallback method is called.
pingSender.PingCompleted += new PingCompletedEventHandler (PingCompletedCallback); // Create a buffer of 32 bytes of data to be transmitted.
string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
byte[] buffer = Encoding.ASCII.GetBytes (data); // Wait 12 seconds for a reply.
int timeout = 12000; // Set options for transmission:
// The data can go through 64 gateways or routers
// before it is destroyed, and the data packet
// cannot be fragmented.
PingOptions options = new PingOptions (64, true); Console.WriteLine ("Time to live: {0}", options.Ttl);
Console.WriteLine ("Don't fragment: {0}", options.DontFragment); // Send the ping asynchronously.
// Use the waiter as the user token.
// When the callback completes, it can wake up this thread.
pingSender.SendAsync(who, timeout, buffer, options, waiter); // Prevent this example application from ending.
// A real application should do something useful
// when possible.
waiter.WaitOne ();
Console.WriteLine ("Ping example completed.");
} public static void PingCompletedCallback (object sender, PingCompletedEventArgs e)
{
// If the operation was canceled, display a message to the user.
if (e.Cancelled)
{
Console.WriteLine ("Ping canceled."); // Let the main thread resume.
// UserToken is the AutoResetEvent object that the main thread
// is waiting for.
((AutoResetEvent)e.UserState).Set ();
} // If an error occurred, display the exception to the user.
if (e.Error != null)
{
Console.WriteLine ("Ping failed:");
Console.WriteLine (e.Error.ToString ()); // Let the main thread resume.
((AutoResetEvent)e.UserState).Set();
} PingReply reply = e.Reply; DisplayReply (reply); // Let the main thread resume.
((AutoResetEvent)e.UserState).Set();
} public static void DisplayReply (PingReply reply)
{
if (reply == null)
return; Console.WriteLine ("ping status: {0}", reply.Status);
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);
}
}
}
}